Question

Which of the following set of elements will have no affinity for electron?

• A. $He,Be,B$
• B. $N,Ne,Na$
• C. $He,Ne,Ca$
• D. $N,Sb,Kr$

Answer 1

Answer: (C)

$IIA,N$ , -atom and Nobel gases have no affinity for electron i.e. addition of electron is endothermic ( $\Delta H_{eg}=$ positive)