Question Detail

CHM 101 CHM 101 Past Questions Objective Question

Question

What trend is observed in electronegativity across a period?
Options
A Decreases
B Increases
Correct Answer
C Remains constant
D Decreases and then increases
Correct Answer

Option B is the correct answer.

Detailed Explanation

As you move from left to right across a period, the atomic radius decreases and the nuclear charge increases. This stronger pull on bonding electrons causes electronegativity to increase.

Hint

Atoms on the right side of a period (excluding noble gases) are more electronegative than those on the left.

Question Info