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$(A)$ $\left[ Ni \left( H _{2} O \right)_{2}( en )_{2}\right]^{2+}$
$(B)$ $\left[ Ni \left( H _{2} O \right)_{4}(\text { en })\right]^{2+}$ અને
$(C)$ $\left[ Ni ( en )_{3}\right]^{2+}$
| સૂચિ $- I$ | સૂચિ $- II$ |
| $(a)$ $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$ | $(i)$ $5.92 \,\mathrm{BM}$ |
| $(b)$ $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$ | $(ii)$ $0 \,\mathrm{BM}$ |
| $(c)$ $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}$ | $(iii)$ $4.90\, \mathrm{BM}$ |
| $(d)$ $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$ | $(iv)$ $1.73\, \mathrm{BM}$ |
નીચે આપેલા વિકલ્પોમાંથી સાચો જવાબ પસંદ કરો.
| કૉલમ$-I$ | કૉલમ$-II$ |
| $(a)\;Co^{+3}$ | $(i)\;\sqrt{8}\; B.M.$ |
| $(b)\;Cr^{+3}$ | $(ii)\;\sqrt{35}\; B.M.$ |
| $(c)\;Fe^{+3}$ | $(iii)\;\sqrt{3}\; B.M.$ |
| $(d)\;Ni^{+2}$ | $(iv)\;\sqrt{24}\; B.M.$ |
| $(v)\;\sqrt{15}\; B.M.$ |
$(a)\quad (b)\quad (c)\quad (d)$
(મુક્ત $CO$ માં $C-O$ બંધલંબાઇ $1.128\,\mathop A\limits^o $ છે.
$($At. No. $Mo = 42, Pt = 78)$