JEE MAIN - Chemistry (2024 - 5th April Morning Shift - No. 21)
The spin-only magnetic moment value of the ion among $$\mathrm{Ti}^{2+}, \mathrm{V}^{2+}, \mathrm{Co}^{3+}$$ and $$\mathrm{Cr}^{2+}$$, that acts as strong oxidising agent in aqueous solution is _________ BM (Near integer).
(Given atomic numbers : $$\mathrm{Ti}: 22, \mathrm{~V}: 23, \mathrm{Cr}: 24, \mathrm{Co}: 27$$)
Answer
5
Explanation
The ion which acts as strong oxidising agent in aqueous solution is $$\mathrm{Cr}^{2+}:[\mathrm{Ar}] 4 s^{\circ} 3 d^4$$
$$\mu=\sqrt{4(4+2)}=4.89 \Rightarrow 5$$
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