Which of the following ligands are of si...

Which of the following ligands are of `sigma` -donor and `pi`- acceptor type?
(i) `C_(2)H_(2)`, (ii) `C_(2)H_(4)`, (iii) CO, (iv) `barCN`, (v) `(sigma - C_(3)H_(5)^(-))`

A

(i), (iii) only

B

(iii) & (iv) only

C

(iii), (iv) & (v) only

D

(i) & (ii) only

Verified by Experts

The correct Answer is:

B

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