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</div><h2>HL Paper 1</h2><div class="question">
<p class="p1">Which species has the electron configuration of \({\text{1}}{{\text{s}}^{\text{2}}}{\text{2}}{{\text{s}}^{\text{2}}}{\text{2}}{{\text{p}}^{\text{6}}}{\text{3}}{{\text{s}}^{\text{2}}}{\text{3}}{{\text{p}}^{\text{6}}}{\text{3}}{{\text{d}}^{\text{8}}}\)?</p>
<p class="p1">A. <span class="Apple-converted-space"> </span>Ni</p>
<p class="p1">B. <span class="Apple-converted-space"> </span>\({\text{N}}{{\text{i}}^{2 + }}\)</p>
<p class="p1">C. <span class="Apple-converted-space"> </span>Fe</p>
<p class="p1">D. <span class="Apple-converted-space"> </span>\({\text{C}}{{\text{u}}^{2 + }}\)</p>
</div>
<br><hr><br><div class="question">
<p class="p1">Which statements are correct for the alkali metals Li to Cs?</p>
<p class="p1">I. Melting point increases</p>
<p class="p1">II. First ionization energy decreases</p>
<p class="p1">III. Ionic radius increases</p>
<p class="p1">A. I and II only</p>
<p class="p1">B. I and III only</p>
<p class="p1">C. II and III only</p>
<p class="p1">D. I, II and III</p>
</div>
<br><hr><br><div class="question">
<p>Which series is arranged in order of <strong>increasing</strong> radius?</p>
<p>A. \({\text{F}} < {\text{C}}{{\text{l}}^ - } < {\text{Cl}}\)</p>
<p>B. \({\text{Rb}} < {\text{K}} < {\text{Na}}\)</p>
<p>C. \({\text{A}}{{\text{l}}^{3 + }} < {\text{M}}{{\text{g}}^{2 + }} < {\text{N}}{{\text{a}}^ + }\)</p>
<p>D. \({{\text{I}}^ - } < {\text{B}}{{\text{r}}^ - } < {\text{C}}{{\text{l}}^ - }\)</p>
</div>
<br><hr><br><div class="question">
<p class="p1">What is the correct electron configuration of the \({\text{C}}{{\text{u}}^ + }\) ion?</p>
<p class="p1">A. <span class="Apple-converted-space"> </span>\({\text{[Ar] 3}}{{\text{d}}^{\text{9}}}{\text{ 4}}{{\text{s}}^{\text{1}}}\)</p>
<p class="p1">B. <span class="Apple-converted-space"> </span>\({\text{[Ar] 3}}{{\text{d}}^{\text{7}}}{\text{ 4}}{{\text{s}}^{\text{2}}}\)</p>
<p class="p1">C. <span class="Apple-converted-space"> </span>\({\text{[Ar] 3}}{{\text{d}}^{{\text{10}}}}\)</p>
<p class="p1">D. <span class="Apple-converted-space"> </span>\({\text{[Ar] 3}}{{\text{d}}^{\text{8}}}{\text{ 4}}{{\text{s}}^{\text{1}}}\)</p>
</div>
<br><hr><br><div class="question">
<p class="p1">What is the definition of electronegativity?</p>
<p class="p1">A. <span class="Apple-converted-space"> </span>The relative measure of the tendency of an atom when bonded in a molecule to attract a shared pair of electrons towards itself.</p>
<p class="p1">B. <span class="Apple-converted-space"> </span>The minimum energy required to remove a mole of electrons from a mole of gaseous atoms.</p>
<p class="p1">C. <span class="Apple-converted-space"> </span>The enthalpy change occurring in \({\text{kJ mo}}{{\text{l}}^{ - {\text{1}}}}\) when a gaseous atom gains one electron to form a negative ion.</p>
<p class="p1">D. <span class="Apple-converted-space"> </span>The strength of an atom measured in \({\text{kJ mo}}{{\text{l}}^{ - {\text{1}}}}\) to attract an electron to itself when bonded in a molecule.</p>
</div>
<br><hr><br><div class="question">
<p>Which statements are correct for the oxides of period 3 going from Na to Cl?</p>
<p>I. The oxides become increasingly acidic.</p>
<p>II. The bonding of the oxides changes from ionic to covalent.</p>
<p>III. All the oxides dissolve readily in water.</p>
<p>A. I and II only</p>
<p>B. I and III only</p>
<p>C. II and III only</p>
<p>D. I, II and III</p>
</div>
<br><hr><br><div class="question">
<p class="p1">The <em>x</em>-axis of the graph below represents the atomic number of the elements in period 3.</p>
<p class="p1" style="text-align: center;"><img src="images/Schermafbeelding_2016-09-25_om_11.26.20.png" alt="N10/4/CHEMI/HPM/ENG/TZ0/07"></p>
<p class="p1">Which variable could represent the <em>y</em>-axis?</p>
<p class="p1">A. Melting point</p>
<p class="p1">B. Electronegativity</p>
<p class="p1">C. Ionic radius</p>
<p class="p1">D. Atomic radius</p>
</div>
<br><hr><br><div class="question">
<p class="p1">Which species has the largest radius?</p>
<p class="p1">A. Cl<sup><span class="s1">–</span></sup></p>
<p class="p1">B. K</p>
<p class="p1">C. Na<sup><span class="s1">+</span></sup></p>
<p class="p1">D. K<sup><span class="s1">+</span></sup></p>
</div>
<br><hr><br><div class="question">
<p class="p1">Which process is endothermic?</p>
<p class="p1">A. <span class="Apple-converted-space"> </span>\({\text{2}}{{\text{C}}_4}{{\text{H}}_{10}}{\text{(g)}} + {\text{13}}{{\text{O}}_2}{\text{(g)}} \to {\text{8C}}{{\text{O}}_2}{\text{(g)}} + {\text{10}}{{\text{H}}_2}{\text{O(g)}}\)</p>
<p class="p1">B. <span class="Apple-converted-space"> </span>\({\text{Na(g)}} \to {\text{N}}{{\text{a}}^ + }{\text{(g)}} + {{\text{e}}^ - }\)</p>
<p class="p1">C. <span class="Apple-converted-space"> </span>\({{\text{H}}_2}{\text{S}}{{\text{O}}_4}{\text{(aq)}} + {\text{2KOH(aq)}} \to {{\text{K}}_2}{\text{S}}{{\text{O}}_4}{\text{(aq)}} + {\text{2}}{{\text{H}}_2}{\text{O(l)}}\)</p>
<p class="p1">D. <span class="Apple-converted-space"> </span>\({\text{N}}{{\text{H}}_3}{\text{(g)}} \to {\text{N}}{{\text{H}}_3}{\text{(l)}}\)</p>
</div>
<br><hr><br><div class="question">
<p class="p1">Which property increases down group 17, the halogens?</p>
<p class="p1">A. Electron affinity</p>
<p class="p1">B. Boiling point</p>
<p class="p1">C. First ionization energy</p>
<p class="p1">D. Reactivity</p>
</div>
<br><hr><br><div class="question">
<p>What is the order of decreasing ionic radius?</p>
<p>A. S<sup>2−</sup> > Cl<sup>−</sup> > Al<sup>3+</sup> > Mg<sup>2+</sup></p>
<p>B. Cl<sup>−</sup> > S<sup>2−</sup> > Al<sup>3+</sup> > Mg<sup>2+</sup></p>
<p>C. S<sup>2−</sup> > Cl<sup>−</sup> > Mg<sup>2+</sup> > Al<sup>3+</sup></p>
<p>D. Mg<sup>2+</sup> > Al<sup>3+</sup> > Cl<sup>−</sup> > S<sup>2−</sup></p>
</div>
<br><hr><br><div class="question">
<p>Which compounds have an ionic lattice structure in the solid state?</p>
<p>I. Silicon dioxide</p>
<p>II. Sodium fluoride</p>
<p>III. Ammonium nitrate</p>
<p>A. I and II only</p>
<p>B. I and III only</p>
<p>C. II and III only</p>
<p>D. I, II and III</p>
</div>
<br><hr><br><div class="question">
<p class="p1">Which equation best represents the first ionization energy of magnesium?</p>
<p class="p1">A. <span class="Apple-converted-space"> </span>\({\text{Mg(s)}} \to {\text{M}}{{\text{g}}^ + }{\text{(s)}} + {{\text{e}}^ - }\)</p>
<p class="p1">B. <span class="Apple-converted-space"> </span>\({\text{Mg(g)}} \to {\text{M}}{{\text{g}}^{2 + }}{\text{(g)}} + {\text{2}}{{\text{e}}^ - }\)</p>
<p class="p1">C. <span class="Apple-converted-space"> </span>\({\text{Mg(g)}} \to {\text{M}}{{\text{g}}^ + }{\text{(g)}} + {{\text{e}}^ - }\)</p>
<p class="p1">D. <span class="Apple-converted-space"> </span>\({\text{Mg(s)}} \to {\text{M}}{{\text{g}}^ + }{\text{(g)}} + {{\text{e}}^ - }\)</p>
</div>
<br><hr><br><div class="question">
<p>Which statements about reactivity are correct?</p>
<p>I. Potassium reacts more vigorously than sodium with chlorine.</p>
<p>II. Lithium reacts more vigorously than potassium with water.</p>
<p>III. Fluorine reacts more vigorously than bromine with a potassium iodide solution.</p>
<p>A. I and II only</p>
<p>B. I and III only</p>
<p>C. II and III only</p>
<p>D. I, II and III</p>
</div>
<br><hr><br><div class="question">
<p>The elements argon, potassium, and calcium are consecutive in the periodic table. Which gives the correct order of <strong>increasing</strong> first ionization energies?</p>
<p>A. \({\text{Ar}} < {\text{Ca}} < {\text{K}}\)</p>
<p>B. \({\text{K}} < {\text{Ar}} < {\text{Ca}}\)</p>
<p>C. \({\text{Ca}} < {\text{K}} < {\text{Ar}}\)</p>
<p>D. \({\text{K}} < {\text{Ca}} < {\text{Ar}}\)</p>
</div>
<br><hr><br><div class="question">
<p class="p1">Which metals are considered to be transition elements?</p>
<p class="p1">I. Ti</p>
<p class="p1">II. Zn</p>
<p class="p1">III. Fe</p>
<p class="p1">A. I and II only</p>
<p class="p1">B. I and III only</p>
<p class="p1">C. II and III only</p>
<p class="p1">D. I, II and III</p>
</div>
<br><hr><br><div class="question">
<p>Which electron configuration is that of a transition metal atom in the ground state?</p>
<p>A. [Ne]3s<sup>2</sup>3p<sup>6</sup>4s<sup>1</sup></p>
<p>B. [Ar]3d<sup>9</sup></p>
<p>C. 1s<sup>2</sup>2s<sup>2</sup>2p<sup>6</sup>3s<sup>2</sup>3p<sup>6</sup>4s<sup>2</sup>3d<sup>10</sup>4p<sup>2</sup></p>
<p>D. [Ar]4s<sup>1</sup>3d<sup>5</sup></p>
</div>
<br><hr><br><div class="question">
<p class="p1">Each of the following oxides is added to separate equal volumes of distilled water. Which of the following is the most acidic oxide?</p>
<p class="p2">A. <span class="Apple-converted-space"> </span>\({{\text{P}}_{\text{4}}}{{\text{O}}_{{\text{10}}}}{\text{ }}\)</p>
<p class="p2">B. <span class="Apple-converted-space"> </span>\({\text{S}}{{\text{O}}_{\text{3}}}\)</p>
<p class="p2">C. <span class="Apple-converted-space"> </span>\({\text{C}}{{\text{l}}_{\text{2}}}{{\text{O}}_{\text{7}}}\)</p>
<p class="p2">D. <span class="Apple-converted-space"> </span>\({\text{Si}}{{\text{O}}_{\text{2}}}\)</p>
</div>
<br><hr><br><div class="question">
<p class="p1">Which statement about the elements in group 7 is correct?</p>
<p class="p1">A. <span class="Apple-converted-space"> </span>\({\text{B}}{{\text{r}}_{\text{2}}}\) will oxidize \({\text{C}}{{\text{l}}^ - }\).</p>
<p class="p1">B. <span class="Apple-converted-space"> </span>\({{\text{F}}_{\text{2}}}\) has the least tendency to be reduced.</p>
<p class="p1">C. <span class="Apple-converted-space"> </span>\({\text{C}}{{\text{l}}_{\text{2}}}\) will oxidize \({{\text{I}}^ - }\).</p>
<p class="p1">D. <span class="Apple-converted-space"> </span>\({{\text{I}}_{\text{2}}}\) is a stronger oxidizing agent than \({{\text{F}}_{\text{2}}}\).</p>
</div>
<br><hr><br><div class="question">
<p class="p1">Which correctly describes the reaction between potassium and excess water?</p>
<p class="p1">A. The reaction is endothermic.</p>
<p class="p1">B. The final products of the reaction are potassium oxide and hydrogen.</p>
<p class="p1">C. The final products of the reaction are potassium hydroxide and hydrogen.</p>
<p class="p1">D. The final pH of the solution is 7.</p>
</div>
<br><hr><br><div class="question">
<p>Which oxides form acidic solutions when added to water?</p>
<p>A. \({{\text{P}}_{\text{4}}}{{\text{O}}_{{\text{10}}}}{\text{(s)}}\) and \({\text{S}}{{\text{O}}_{\text{3}}}{\text{(g)}}\) </p>
<p>B. \({\text{N}}{{\text{a}}_{\text{2}}}{\text{O(s)}}\) and \({\text{MgO(s)}}\)</p>
<p>C. \({\text{A}}{{\text{l}}_{\text{2}}}{{\text{O}}_{\text{3}}}{\text{(s)}}\) and \({\text{Si}}{{\text{O}}_{\text{2}}}{\text{(s)}}\)</p>
<p>D. \({\text{MgO(s)}}\) and \({\text{A}}{{\text{l}}_{\text{2}}}{{\text{O}}_{\text{3}}}{\text{(s)}}\)</p>
</div>
<br><hr><br><div class="question">
<p>X, Y and Z represent the successive elements, Ne, Na and Mg, but not necessarily in that order.</p>
<p style="text-align: center;"><img 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IM6tkO+6DdhKZYGlaI0aQWSzwnwifwAn30UZeuvYvDsvExkbr31FRm2esWtpugH9jU29p5KXN/Z2JVQPgmQgD0B8XsTPPXsmXDv9iAgvoir+8NZuCgGPmZ+jBOSY1mM468PRKAYpBq9C2fkQbuVn2DDuEiMe88D2nUH8P0tr9y5PTgqrRWO16z6um5Kaw/1IQESIAESUBABjf9QxAXtQeKhM5Cmfux064WAp/pCWhwqvvHSZx7SLce1EzA7spvLQElLNv4qgwCnLZRhB2pBAiRAArcHAfcoTMnYjkzLtIWlVY5TXPKlteLLvnKnI76WeAqLKP42PwFOWzS/DajBHUjAcQjwDkTAJpMACbQgAo7XLI48tCDjUVUSIAESIAESUAIBOg9KsAJ1IAESIAESIIEWRMBpwKQ4PME/EiCBxiXA86xx+VI6CZBA4xFw6jyI1XEZWeNBp2QScJw/JBESIAESUDIBx4cdTlso2VrUjQRIgARIgAQUSIDOgwKNQpVIgARIgARIQMkE6Dwo2TrUjQRIgARIgAQUSIDOgwKNQpVIgARIgARIQMkE6Dwo2TrUjQRIgARIgAQUSIDOgwKNUrNK4gdmOkLlPRYJhWXVs4ofmYlyR6uxu3G6rh8zrC6FKSRAAk1NoCIPOW+FIET63Ln4mfDe8J//D+RVyE/k6yj5cjISH20FMfpdpfJGh8lvY+EXJTDI9TUWIH+NTFbIdEw84pBHnr8yA4v9/oCQnB/lqdwmAZcE6Dy4RKPUA+bPynZJR1rCJmRVyi8sxTi+Kg7jDo7BrHlPIYDWVaoRqRcJ2BMw5mP3y08hIv+vGF98Q1oqX1U8BWPP6jDk1fetDwLG4mWY85fTyB/xOc5UCRCq9uFDr7cwL/gtrCuzXAuKcXzx43jk+CtYKeYRBFRt/T0qHx2LEUev2dcr7lV+go1JM/HR+furH2MKCbgiIH6S2/HP9JoHx1TuK4fATaHiSJQQDK3glXJEuCIpVikU7wgUtIgQdEeuKkdVauKUAM8xp1ju2MSqs/FCGPoKwdmldgzs08uEore7CAjbKHxWJctWtV9Y36+9rey1VGGaprdtX8p6Qcid4iFopuUKJdailcLlw5OE8T2XCF98Gee0fmtWbtzxBByvWXw2deVVKTpdA/cB67Fthy80SQuQcPQaxCeS10Z+BUPKHKQOaKdo7akcCZCAPQF191RkC8fxWdi99gekvRIUffcjjChF8bel0PTpDD/5lVvdGX8cZMCh/aehd1JanmQ4dQlF5gEK47lEhD/TBn1yXsXD7dzk2bhNArUSkHfBWjMzg5IItIHPX1OxOjoPWTMSMCZqEdKjd2B/4gB4KUlN6kICJHCLBIIw9NHOUBsv4dLXP7uUZXUMPJ9G5LyrOLTjn7bpjst78Y/0h6CbPwzB5qu+2nsC3rs4D/E+v3MpkwdIwBUBl6+ndlWA6QoioA7Es4umIrb/PGxCAuZmMM5BQdahKiRwawSM+Xg/ZQsOxKZjWbe7gIoiFBUagIdqE+uLfjM2Y23Y4+jjZgmj1EK77gC+l49KevjBvzZRPE4CLghw5MEFmJaRfB36w5/gH+JYpf4g9nypt4+4bhmNoJYkQALVCOhxbu0LGP7fU7Fyfj0fCiozsOShYVjx15O4IpgCJoWKDZj/6V/Q5+1vUFqtLiaQQP0J0HmoPzOFlDCgsnAmkqQ4h4+xf9E1nI5McB5NrRCNqQYJkEBdCOhxbs3j6D2hH8avnWSbVmjrB7+etQ0WG1H+5UbMLohHQpS/bQrTPQyRLwbg/CvbkWVdlVEXXZiHBJwToPPgnIvyUyuzsCYuDRlRG5CR8AQGT1iKpUHZyJrxjsPyTeU3hRqSAAmYCRgLcCQl1OQ4nHoDqT09bWjUndH5wbtt+w5bYiBlgPpfOJ6dD4OXyvEo3Dv64THDPmQd/cnhGHdJoP4E6DzUn1nzlzCeRm7yFCRejMOs16MwuK0acNfhpeU6BOctQ8LqfA5NNr+VqAEJ1IuA8fIqJA16EANznsGs0w6OgyTJC74PeMEaGGmRbryEf528Aa8HvOGBTugXHghNqWA5av41oPKHIhzQDIFuQHuHY9wlgfoToPNQf2bNXOI6Lu98AaNX9MbgLUmY7WuJlBaXb67AmjQvaJJeQ9S+y4x/aGZLsXoSqDOBygyseH4KFl+Mw9ytyUjuIRtxsArxQNeIUYg9sAQJ68yxC+JIxZIJePHzSZgd2Q0aaOAxcDJWD8pCVvp+29spK3OQuSkf9yx4FjpPXvatSLnRYALsRQ1G1xwFDag8Og6jhhfDkDIfGUN8YD8DqkX3uA1YHf0FcmNSsLD41+ZQknWSAAnUi0A5zr87B4mHDIA+FfM6tja/elp8/bTpv1XiAekdDmrfOEz7IBQR7z6EDuIxt1549OwYzDr4CsZbnAL3JxG3ZwOSkIJ5Hm4mGd12IGfUMRTM4FLuepmGmV0SUImvzXI8KnZYJ8mO2bhPAiTQQAI8xxoIjsVIgASahYDjNYsjD81iBlZKAiRAAiRAAi2XAJ2Hlms7ak4CJEACJEACzUKAzkOzYGelJEACJEACJNByCdB5aLm2o+YkQAIkQAIk0CwE7IP1ZSqIwRH8IwESaDwCPMcajy0lkwAJNC4Bl84DV1s0LnhKv7MJOEYu39k02HoSIAGlE3B82OG0hdItRv1IgARIgARIQGEE6DwozCBUhwRIgARIgASUToDOg9ItRP1IgARIgARIQGEE6DwozCBUhwRIgARIgASUToDOg9ItRP1IgARIgARIQGEE6DwozCC1qlOZgWWPtoIq5E1kVRqdZDegfF8ovFW90SfrO35Z0wkhJpFAiyRgzMfuGHdYPpJla4Me5z5JQKJ4XRA/luUdg8i9RSi1ZTBtGQuQvyYEIeaPbalCpmPikRJeIxw5cb9OBOg81AmTgjK56/DSch2C85YhYXV+9QtEZRbWzj+I0th52PpcJ4evbiqoHVSFBEigHgSu4/LOBLycft2hzHVcznwGvVM8cPe6H6UPGgrFUxCXGwr/xUdt1wdjPnaNDMEY1SpkCgIEoQTn4k7g9MBXMfHcLw4yuUsCtROg81A7I4Xl0MB9wFIsW+SG0qQFSDh6TaZfMY6vSkTixTjMmvcUAmhdGRtukkBLJWBAZeFMTI+uQpf+Dq/mKduClSO/gld0DGb38DQ1UB2AkPFP409JK5AsOQYGlOcm4fmdY5EQ5Q8vKZcWfs+vxZwp2Vi36bD0ue+WSod6Nw8B3l6ah/st1uqLfhOWYmlQNrJmvGOevjCg8mgips3qA92ehUj2/d0t1sHiJEACiiBQmYXUEZvxzTuvIbqtvUZGfQFOGfrAr9O9dqOMaq0/+mj2YM/nl2DEdzienQ9MGoKhnvJLfhc8trwMN5c+Bq29WO6RQK0E5D2p1szMoCACDtMXlZVZSJu0GwUpc5A6oJ2CFKUqJEACDSdgGk2c3fcdfKBzh1s9BKm8DCj9tgQVxkv418kb8Hrg97gqi41oFf0GVhWW1UMis5KAjQCdBxuLFrYlTl+sx7YdvtAkzUBMzERMb52C1JcDzcOSLaw5VJcESMCBgGk08cm/T8D2lc+is5OrtWmE4VeHcoA4IvG13pxcUYSiz6twY/kYhB54FjEHb0IQbuLqjO9w7KEZSC6uXr6aQCaQgAMBJ93RIQd3FUygDXz+morV0fnYvbs/dIv/Bp07Tapgg1E1EqgzAWPxQkwMuorgj8a5Pq89YzDx3btwaMFqpF02OQHGy5uxfPaH+FkWHyGOQvzUeTq2Lx0Cf+kSoYF7zwmIfXk7Fq06xJiHOluFGS0EeKexkGipv+r2aOflBmgDENzdo6W2gnqTAAnICRjz8X7Sm/hoQXIt05Bt4BP5Ac5MP4+jga2hUnnjvhUq3P/GVoxp4wavB7xhCZPQ9OkMP7srvhd8H/CC4dQlFDlb9S3Xh9sk4EDAris5HOMuCZAACZBAMxAwnt+MtdvKUZr0MDpY3svgFoqxuQYYlg2GtyoSCdYlllr4PbUdW0pMSzCvvBEDnWchij7vJgVSqj3DET6CDxbNYMbbuko6D7e1edk4EiCBlkhA3T0V2dL7GESHwPxftR8bB2ugmZaLEiETqd3vAoy52BD4B4Tk/GjXTDHm4SQioBvQHsB98OvvB7y5D3vK5EMMpfih6Cq8QvzNUxl2IrhDAjUSoPNQIx4eJAESIAEFE1AH4i8v3IO8lFRZzEMG3lmdjdLtL2K8tDSzDXyenIRFgW8ieY3lxXLXUfLFQryTFon4UX9ikLWCTaxU1eg8KNUy1IsESIAEaiXggW7jPsCxyDxk+YoxDyq4jfoap0f9Eyd0sjfMukchMftTbP01Fn2kaRB3dFrbG/1PLuY7YWplzAzOCKgEcUzM4U/sgE6SHXJxlwRIoKEEeI41lBzLkQAJNAcBx2sWRx6awwqskwRIgARIgARaMAE6Dy3YeFSdBEiABEiABJqDAJ2H5qDOOkmABEiABEigBROg89CCjUfVSYAESIAESKA5CNB5aA7qrJMESIAESIAEWjABh4/D21oiRlbyjwRIoPEI8BxrPLaUTAIk0LgEXDoPXKrZuOAp/c4m4Ljs6c6mwdaTAAkonYDjww6nLZRuMepHAiRAAiRAAgojQOdBYQahOiRAAiRAAiSgdAJ0HpRuIepHAiRAAiRAAgojQOdBYQahOiRAAiRAAiSgdAJ0HpRuIepHAiRAAiRAAgojQOdBYQapXR0DyveFwlv6Mp5K+oqeGAVr/98PITk/1i6KOUiABBRK4CIOTPV0OK/l57n8HNej6OMRiPE2H/eOQeTeIpQ6tMx4OQObXvU2y/RGh8lbkFX8q0Mu7pJA3QjQeagbJwXl0sBjyH6UCIL05VNxSa31v2Iv1j/fBggeifhH2itIZ6pCAiRQPwJd8NjyMtu5bTnPK7ZjycDW8EpJRWbYvQCu43LmM+i1pBPuz70GQbiJitz70XlRH/gvPmpzICozsCziRaz885e4Kcn6Fl89nIoRUauRVWmsn2rMTQIA6DzcNt2gGMdXxWHcweGIT42Fzp2mvW1My4aQgERAPMcTMb11ClJfDoSXmFa2BStH/oKgOVOQ3MMTgAbuPSbjhRhflK76AFllomNgQPmXGzG7IB5xYR1herlPG/iEj8GkI5uRdvgn8iWBehNw+ZKoektigWYkID59DMPTs9ohIPM1rOwpXkT4RwIkcPsQMKDyaCKmzfoPBGePtj0ceMZj6c34W2jmWRR99yMMuNfsVNyCKBa9owjw8fQ2MLexeBleG/kVDFNXYPtznXgRuA1syiaQgB0B41fISfsQh2JnYmWoOF3h6u86Sr6YiIUvuyFgZRzGe4qXeA08Bo7FQv80rM35AQap6HWUHN2Lzfe8jpVR3XjNcIWT6S4JcOTBJZoWcqAyAyuiFmFT0FJkzg2FP93BFmI4qkkCdSdgPL8Za9O7Iyj7LwhwcY4bzyXgiR5pyBHdhdGrkf6I1uYUuEdh2nuHcKBHZ7SyVqtD/NlXbKMY1nRukEDtBFx0w9oLMocSCJjmQBMvxmHu1gReBJRgEupAAr85gXJcOJiNnFoCodXdU5EtBkNWncKnHRZhROBkJEurKcQpjxEY1PsXdC0QgyrFIOubqCjQouzBl5BQWPaba0yBtz8BleDkC1j8aE9LMLwY5xCCwOH/hlfmxzih43RFS7CaRUeeYxYS/K2VgDEXG0MjMCfqa3w/rrttNKGmgmVpSLx3IralfYPica2QN/UhhKv34Pulj0FrLScuB3WWbs3ADRKwEnC8ZnHkwYqmZW1Y4xxSNmA/HYeWZTxqSwL1IGA8vxuZn/WCX6f6BTWqvAwo/bYEFWXZyN5e7qRGL/g+4AXDtv3YI63KcJKFSSTgggCdBxdgFJ1sjnNIj9qAjATzki1FK0zlSIAEGkbAPGWhDYNuQPV3t4hxDuEq+QujbLUIpb0RFBoAT89whI/wsB2wbpWi+NtSaEaFYqgUWGk9wA0SqJUAnYdaESktg75j1vIAAAGFSURBVC3OYdbrURjcliZUmoWoDwn8dgRMN3j07oqeTs51dfckLFr0vzi0bS9yK8wvezKeRu6ChXgzagpmDxQdjk7oHzsGEds+xMJPzplfHGVAZeEqbF75CIY+95BsKuO305ySbm8CvPO0NPuWfYis1cWAPhXzOrZ2+fraVokHoG9pbaO+JEAC9STgi34zPsWhsL1I93MzXQ/cpmFhp83Ylzra/HChgXvPFdi2rxsezHkMHaTX2bfCPYs7od+p95A5oF0962R2EgAYMMleQALNQMAx+KgZVGCVJEACJFBnAo7XLI481BkdM5IACZAACZAACYgE6DywH5AACZAACZAACdSLAJ2HeuFiZhIgARIgARIgAToP7AMkQAIkQAIkQAL1IuDy2xZicAT/SIAEGo8Az7HGY0vJJEACjUvAqfPg5I3VjasFpZMACZAACZAACbQYApy2aDGmoqIkQAIkQAIkoAwCdB6UYQdqQQIkQAIkQAIthgCdhxZjKipKAiRAAiRAAsog8P+MdL43XUNc8QAAAABJRU5ErkJggg=="></p>
<p>What is the order of increasing atomic number?</p>
<p>A. X < Y < Z</p>
<p>B. X < Z < Y</p>
<p>C. Y < Z < X</p>
<p>D. Y < X < Z</p>
</div>
<br><hr><br>