$A$. $\mathrm{Ti}^{3+}$ $B$. $\mathrm{Cr}^{2+}$ $C$. $\mathrm{Mn}^{2+}$ $D$.$\mathrm{Fe}^{2+}$ $E$. $\mathrm{Sc}^{3+}$
નીચે આપેલા વિકલ્પોમાંથી સૌથી બંધબેસતો જવાબ પસંદ કરો.
| lons | No. of unpaired electrons | Configuration |
| \( \mathrm{Ti}^{3+} \) | \(1\) | \(3 d^1\) |
| \( \mathrm{Cr}^{2+} \) | \(4\) | \(3 d^4\) |
| \( \mathrm{Mn}^{2+} \) | \(5\) | \(3 d^5\) |
| \( \mathrm{Fe}^{2+} \) | \(4\) | \(3 d^6\) |
| \( \mathrm{Sc}^{3+}\) | \(0\) | \(3 d^0\) |
Spin only magnetic moment is given by \(\sqrt{n(n+2)} \mathrm{BM}\)
\(\therefore \mathrm{Cr}^{2+}\) and \(\mathrm{Fe}^{2+}\) will have same spin only magnetic moment.