Which of the following is correctly matched?

PHYSICS · Single correct · ISC · Physics · Kinematics · Laws of Motion

Problem

Which of the following is correctly matched? (1)

[\text{Fe}(\text{CN})_6]^{4-}

and

[\text{Fe}(\text{CN})_6]^{3-}

— both are octahedral and diamagnetic with

d^2sp^3

-hybridisation (2)

\text{Ni}(\text{CO})_4

and

[\text{Ni}(\text{CN})_4]^{2-}

— both are tetrahedral and diamagnetic with

sp^3

-hybridisation (3)

\text{Ni}(\text{CO})_4

and

[\text{Co}(\text{CO})_4]^-

— both are tetrahedral and diamagnetic (4)

[\text{Co}(\text{H}_2\text{O})_6]^{3+}

and

[\text{Cr}(\text{H}_2\text{O})_6]^{3+}

— both are paramagnetic and metal is

d^2sp^3

-hybridised