The process requiring absorption of energy is

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The process of adding an electron to an atom is known as electron gain enthalpy. For most non-metals,this process is exothermic (releases energy).

Vedclass · Accepted Answer

$N \longrightarrow N^{-}$

Vedclass · Answer

(A) The process of adding an electron to an atom is known as electron gain enthalpy. For most non-metals,this process is exothermic (releases energy). However,for nitrogen,the electronic configuration is $1s^2 2s^2 2p^3$. Since the $2p$ subshell is exactly half-filled,it is exceptionally stable. Adding an electron to nitrogen to form $N^-$ requires the absorption of energy to overcome the stability of the half-filled configuration: $N + e^- \longrightarrow N^-$.

Similar Questions

The ratio of the velocity of sound in hydrogen $(\gamma = 7/5)$ to that in helium $(\gamma = 5/3)$ at the same temperature is

Which of the following is $NOT$ a method of sexual reproduction in fungi?

If the angles of a triangle are in the ratio $4:1:1,$ then the ratio of the longest side to the perimeter is

How many $EDTA$ molecules are required to make an octahedral complex with a $Ca^{2+}$ ion?

Vedclass Test Series

Exam Paper Generator

Online Exam Module