Question

Which statement applies to electronegativity?

A.) Electronegativity increases across a period.

B.) All atoms with the same number of electron shells have equal
electronegativities.

C.) Electronegativity is the amount of energy required to remove an electron from
a gaseous atom.

D.) Electronegativity increases down a group.

Answer 1

Answer: The correct answer is Option A.

Explanation:

Electronegativity is defined as the tendency of an atom to attract the shared pair of electrons towards itself whenever a bond is formed.

This property increases as we move from left to right across a period because the number of charge on the nucleus gets increased and electrons are attracted more towards the nucleus.

This property decreases as we move from top to bottom in a group because the electrons get add up in the new shells which make them further away from the nucleus.

Thus, the correct answer is Option A.