MCQ
Which one is the electronic configuration of $F{e^{ + 2}}$
- ✓$1{s^2},2{s^2}2{p^6},3{s^2}3{p^6}3{d^6}$
- B$1{s^2},2{s^2}2{p^6},3{s^2}3{p^6}3{d^4},4{s^2}$
- C$1{s^2},2{s^2}2{p^6},3{s^2}3{p^6}3{d^5},4{s^1}$
- DNone of these
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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 :
${N_{2(g)}} + 3{H_{2(g)}} \rightleftharpoons \,2N{H_{3(g)}}$ at equilibrium at constant volume will lead to