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Match the complex ions given in column I with the hybridization and number of unpaired electrons given in column II and assign the correct code:
Column I (complex ion) column II ( hybridization, number of
unpaired electrons)
A. ${[C r {(H_{2} O)}_{6}]}^{3 +}$ 1. $d s p^{2}, 1$
B. ${[C o {(C N)}_{4}]}^{2 -}$ 2. $s p^{3} d^{2}, 5$
C. ${[N i {(N H_{3})}_{6}]}^{2 +}$ 3. $d^{2} s p^{3}, 3$
D. ${[M n F_{6}]}^{4 -}$ 4. $s p^{3}, 4$
5. $s p^{3} d^{2}, 2$

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A(3) B(1) C(5) D(2)

A(4) B(3) C(2) D(1)

A(3) B(2) C(4) D(1)

A(4) B(1) C(2) D(3)

answer is A.

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Detailed Solution

${[C r {(H_{2} O)}_{6}]}^{3 +}$ - $d^{2} s p^{3}, 3$ , ${[C o {(C N)}_{4}]}^{2 -}$ - $d s p^{2}, 1$ , ${[N i {(N H_{3})}_{6}]}^{2 +}$ - $s p^{3} d^{2}, 2$ , ${[M n F_{6}]}^{4 -}$ - $s p^{3} d^{2}, 5$

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