નીચેનામાંથી કઈ જલીય ધાતુના આયનમાં સૌથી વધુ અનુચુંબકીય ગુણધર્મ છે?
Diffcult
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b $\ln \left[\operatorname{Cr}\left(H_{2} O\right)_{6}\right]^{3+},$ the $C r^{3+}\left(d^{3}\right)$ ion outer orbital complex with 3 unpaired
electrons
$\ln \left[\operatorname{Fe}\left(H_{2} O\right)_{6}\right]^{2+},$ the $F e^{3+}\left(d^{6}\right)$ ion outer orbital complex with 4 unpaired electrons
$\ln \left[C u\left(H_{2} O\right)_{6}\right]^{2+},$ the $C u^{3+}\left(d^{8}\right)$ ion contains 1 unpaired electrons
$\ln \left[Z n\left(H_{2} O\right)_{6}\right]^{2+}$, the $Z n^{2+}\left(d^{1} 0\right)$ outer orbital complex with o unpaired
electrons
Thus highest paramagnetism is exhibited by $\left[F e\left(H_{2} O\right)_{6}\right]^{2+}$
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