Answer:
C. Electronegativity decreases because the valence electrons are
farther from the nucleus.
Explanation:
a p e x 2021 :)
Electronegativity decreases because the valence electrons are farther from the nucleus. Hence, option C is correct.
Electronegativity is a chemical property that describes the tendency of an atom or a functional group to attract electrons toward itself.
From top to bottom down a group, electronegativity decreases. This is because atomic number increases down a group, and thus there is an increased distance between the valence electrons and nucleus, or a greater atomic radius.
Important exceptions to the above rules include the noble gases, lanthanides, and actinides.
Electronegativity decreases because the valence electrons are farther from the nucleus. Hence, option C is correct.
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