Multiple Choice
Which group of elements on the periodic table exhibits properties of both metals and nonmetals?
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2. Atoms & Elements
Periodic Table: Group Names
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Which pair of elements from the periodic table are expected to have the most similar chemical properties?
A
Mg and Al
B
O and Cl
C
Na and K
D
C and N
Verified step by step guidance1
Understand that elements with similar chemical properties are usually found in the same group (vertical column) of the periodic table because they have the same number of valence electrons.
Identify the groups of each pair: Mg (group 2), Al (group 13); O (group 16), Cl (group 17); Na (group 1), K (group 1); C (group 14), N (group 15).
Recognize that Na and K are both in group 1 (alkali metals), meaning they have the same number of valence electrons and similar chemical behavior.
Note that other pairs are from different groups, so their valence electron configurations differ, leading to different chemical properties.
Conclude that the pair Na and K will have the most similar chemical properties because they belong to the same group and share similar valence electron configurations.
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