નીચેના આયનો પૈકી જે સૌથી વધુ અનુચુંબકીય ગુણધર્મ ધરાવે છે?
IIT 1993, Diffcult
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b (b) ${[Fe{({H_2}O)_6}]^{2 + }}$ has four unpaired electrons, ${[Cr{({H_2}O)_6}]^{3 + }},$${[Cu{({H_2}O)_6}]^{2 + }}$ and ${[Zn{({H_2}O)_6}]^{2 + }}$ have $3, 1, 0$ unpaired electrons respectively.
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