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Question

In halogens, with the increase of atomic number ...



Your Answer
A

Habit to loose electrons decreases

Your Answer
B

Ionic radii decreases

Correct Answer
C

Ionization potential decreases

Your Answer
D

In MX2 (M=metal and X= halogen), covalent properties decreases


Solution

The correct option is B

Ionization potential decreases


Ionization potential decreases.

This happens because the increase in size leads to a reduction in effective nuclear charge due to shielding effect and penetration effect, and this leads to a lesser attraction on the outer electrons. 

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