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The correct pair of orbitals involved in...

The correct pair of orbitals involved in t-bonding between metal and CO in metal carbonyl complexes is:

A

metal `d_(xy)` and carbonyl `pi_(x)^(**)`

B

metal `d_(xy)` and carbonyl `pi_(x)`

C

metal ` d_(x^2 -y^2)` and carbonyl ` pi_(x)^(**)`

D

metal `d_(x^2 -y^2) and` carbonyl` pi_x`

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The correct Answer is:
A
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