MCQ
Which of the following sets is possible for quantum numbers
- A$n = 4,\,l = 3,\,m = - 2,\,s = 0$
- B$n = 4,\,l = 4,\,m = + 2,\,s = - \frac{1}{2}$
- C$n = 4,\,l = 4,\,m = - 2,\,s = + \frac{1}{2}$
- ✓$n = 4,\,l = 3,\,m = - 2,\,s = + \frac{1}{2}$
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| $I.P.$ | Reason |
| $(A)$ $N > O$ | Half filled configuration |
| $(B)$ $Zr < Hf$ | Lanthenide contraction |
| $(C)$ $Na > K$ | $Z_{eff}$ |
| $(D)$ $Al < Ga$ | Transition contraction |
$\text{Cu}^{2+}/\text{ Cu(s)}=+0.34;\text{I}_2\text{(s)}/\text{ I}^-=0.54$
$2 SO _2( g )+ O _2( g ) \rightleftharpoons 2 SO _3( g ), \Delta H =-190\,kJ$
The number of factors which will increase the yield of $SO _3$ at equilibrium from the following is $.............$.
$A.$ Increasing temperature
$B.$ Increasing pressure
$C.$ Adding more $SO _2$
$D.$ Adding more $O _2$
$E.$ Addition of catalyst