Physics NEET Full Syllabus Mock Test 180 Question New Syllabus Mock Test - 10 PCB MCQ (Single Correct)

Which one of the following is an incorrect statement?

A
The ionisation potential of nitrogen is greater than that of oxygen.
B
The electron affinity of fluorine is greater than that of chlorine.
C
The ionisation potential of beryllium is greater than that of boron.
D
The electronegativity of fluorine is greater than that of chlorine.

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Text Solution

Verified by Experts
The correct answer is:
B

I.P. of .

Nitrogen has more I.E. as it have stable half-filled configuration.
The electron affinity of the fluorine is less than chlorine because the size of fluorine is too small, whereas chlorine has a larger size to accommodate electrons hence electron affinity of chlorine is more than fluorine.
E.A.
I.P. of

Be has more I.E. as it has stable fully-filled configuration.
E.N. of

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