MCQ
The conjugate acid of $NH_2^ - $ is
- ✓$N{H_3}$
- B$NH_4^ + $
- C$N{H_2}OH$
- D${N_2}{H_4}$
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Assertion $(A)$ : The first ionization enthalpy of $3 d$ series elements is more than that of group $2$ metals
Reason $(R)$ : In $3d$ series of elements successive filling of d-orbitals takes place.
In the light of the above statements, choose the correct answer from the options given below :