Match the complexes given in column `-I` and the magnetic properties given in column `-II` and select the correct answer using the code below the lists `:`
`{:("Column " I,,"Column " I,,),(("Complexes"),,("Magnetic properties"),,),((a)[NiCl_(2)(PPh_(3))_(2)],,(p)"Paramagnetic with 1 unpaired electrons",,),((b)V(CO)_(6),,(q)"Paramagnetic with 2 unparied electrons",,),((c )[Cr(CN)_(6)]^(4-),,(r)"Paramagnetic with 3 unpaired electrons",,),((d)Ni(CO)_(4),,(s)"Diamagnetic",,):}`
Codes `:`

Options

A. `{:(,"(a)","(b)","(c)","(d)"),(,p,q,r,s):}`
B. `{:(,"(a)","(b)","(c)","(d)"),(,q,p,q,s):}`
C. `{:(,"(a)","(b)","(c)","(d)"),(,p,p,q,r):}`
D. `{:(,"(a)","(b)","(c)","(d)"),(,pr,r,q,s):}`

Answer

2

Explanation

`(a)[NiCl_(2)(PPh_(3))_(2)]` has two unpaired electrons `i.e. e_(g)^(2.2)t_(2g)^(2.1.1)` electron configuration .
`(b) [V(CO)_(5)]` has one unpaired electron `i.e. t_(2g)^(2.2.1)e_(g)^(0.0)` electron configuration.
`(c ) [Cr(CN)_(6)]^(4-)` has two unpaired electron `i.e. t_(2g)^(2.1.1)e_(g)^(0)` electron configuration.
`(d) [Ni(CO)_(4)]` all electrons are paired `i.e. e_(g)^(2.2)t_(2g)^(2.2.2)` electron configuration.