Question

missed this? watch kcv: the periodic law and the periodic table; read section 4.6. you can click on the
part a
which pair of elements do you expect to be most similar?
○ ge and ga
○ n and o
○ ti and ga
○ li and na
○ ar and br
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Explanation:

Elements in the same group (vertical column) of the periodic table have the same number of valence electrons, leading to very similar chemical and physical properties.

• Ge and Ga are adjacent in period 4, different groups.
• N and O are adjacent in period 2, different groups.
• Ti and Ga are in period 4, different groups.
• Li and Na are both in Group 1 (alkali metals), same valence electron count.
• Ar and Br are in period 3, different groups (Ar is noble gas, Br is halogen).

Answer:

Li and Na