Column-1 represents the formula of the complex.
Column-2 represents the hybridization state of the complex and
Column-3 represents the nature of the complex.
$\begin{matrix} C o l u m n I & C o l u m n 2 & C o l u m n 3 (I) & [N i (C O)_{4}] & (i) & s p^{3} & (P) & D i a m a g n e t i c (H i g h s p i n) (I I) & [P t C l_{4}]^{2 -} & (i i) & s p^{3} d^{2} & (Q) & P a r a m a g n e t i c (H i g h s p i n) (I I I) & [N i (C O)_{4}] & (i i i) & d s p^{2} & (R) & D i a m a g n e t i c (L o w s p i n) (I V) & K_{2} [C o (C N)_{4}] & (i v) & d^{2} s p^{3} & (S) & P a r a m a g n e t i c (L o w s p i n) \end{matrix}$
Which of the following set is correct for a diamagnetic tetrahedral complex?

(III) (i) (R)

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(I) (i) (P)

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(II) (i) (R)

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(III) (ii) (S)

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Solution

The correct option is A (III) (i) (R)
In $K_{4} N i (C O)_{4}$ Ni is in ground state i.e. $3 d^{8} 4 s^{2}$ . While CO is a strong field ligand due to which the configuration of central atom becomes $3 d^{10} 4 s^{0}$ .

The 4s and 4p orbitals get hybridized to produce $s p^{3}$ orbitals.

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Q. Column-1 represents the formula of the complex.
Column-2 represents the hybridization state of the complex and
Column-3 represents the nature of the complex.

\begin{matrix} C o l u m n I & C o l u m n 2 & C o l u m n 3 (I) & [N i (C O)_{4}] & (i) & s p^{3} & (P) & D i a m a g n e t i c (H i g h s p i n) (I I) & [P t C l_{4}]^{2 -} & (i i) & s p^{3} d^{2} & (Q) & P a r a m a g n e t i c (H i g h s p i n) (I I I) & [N i (C O)_{4}] & (i i i) & d s p^{2} & (R) & D i a m a g n e t i c (L o w s p i n) (I V) & K_{2} [C o (C N)_{4}] & (i v) & d^{2} s p^{3} & (S) & P a r a m a g n e t i c (L o w s p i n) \end{matrix}

Which of the following set is correct for a diamagnetic tetrahedral complex?

Column-1 represents the formula of the complex.
Column-2 represents the hybridization state of the complex and
Column-3 represents the nature of the complex.
$\begin{matrix} C o l u m n I & C o l u m n 2 & C o l u m n 3 (I) & K_{4} [N i (C O)_{4}] & (i) & s p^{3} & (P) & D i a m a g n e t i c (H i g h s p i n) (I I) & [P t C l_{4}]^{2 -} & (i i) & s p^{3} d^{2} & (Q) & P a r a m a g n e t i c (H i g h s p i n) (I I I) & [N i (C O)_{4}] & (i i i) & d s p^{2} & (R) & D i a m a g n e t i c (L o w s p i n) (I V) & K_{2} [C o (C N)_{4}] & (i v) & d^{2} s p^{3} & (S) & P a r a m a g n e t i c (L o w s p i n) \end{matrix}$
Which of the following sets show Jahn-Teller effect?

Q. Column-1 represents the formula of the complex.
Column-2 represents the hybridization state of the complex and
Column-3 represents the nature of the complex.

\begin{matrix} C o l u m n I & C o l u m n 2 & C o l u m n 3 (I) & K_{4} [N i (C O)_{4}] & (i) & s p^{3} & (P) & D i a m a g n e t i c (H i g h s p i n) (I I) & [K_{4} [F e (C N)_{6}] & (i i) & s p^{3} d^{2} & (Q) & P a r a m a g n e t i c (H i g h s p i n) (I I I) & [N i (C O)_{4}] & (i i i) & d s p^{2} & (R) & D i a m a g n e t i c (L o w s p i n) (I V) & K_{2} [C o (C N)_{4}] & (i v) & d^{2} s p^{3} & (S) & P a r a m a g n e t i c (L o w s p i n) \end{matrix}

Which set corresponds to a complex with a CFSE of

- 2.4 Δ_{0} + 2 P

\begin{matrix} Column - I & Column - II i . & [N i (C O)_{4}] & Planar octahedral, diamagnetic i i . & [F e (N O) (H_{2} O)_{5}]^{2 +} & Planar, paramagnetic i i i . & [C o (N O_{2})_{6}]^{3 -} & Octahedral, diamagnetic i v . & [C u (N H_{3})_{4}]^{2 +} & Planar octahedral, paramagnetic Octahedral, paramagnetic \end{matrix}

Column-1 represents the process
Column-2 represents the $Δ U$ for that process and
Column-3 represents the work done expression for that process.
$\begin{matrix} C o l u m n I & C o l u m n 2 & C o l u m n 3 (I) & A d i a b a t i c e x p a n s i o n & (i) & 0 & (P) & w = q (I I) & I r r e v e r s i b l e i s o t h e r m a l c o m p r e s s i o n & (i i) & P o s i t i v e & (Q) & w = - q (I I I) & R e v e r s i b l e i s o t h e r m a l c o m p r e s s i o n & (i i i) & N e g a t i v e & (R) & w = 0 (I V) & F r e e e x p a n s i o n & (i v) & q & (S) & w = Δ U \end{matrix}$
A gas kept in a 100 L container was allowed to expand in a 5L evacuated container. Which set correctly describes this process?

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The correct option is A (III) (i) (R)In K4Ni(CO)4 Ni is in ground state i.e. 3d84s2. While CO is a strong field ligand due to which the configuration of central atom becomes 3d104s0. The 4s and 4p orbitals get hybridized to produce sp3 orbitals.

The correct option is A (III) (i) (R)
In $K_{4} N i (C O)_{4}$ Ni is in ground state i.e. $3 d^{8} 4 s^{2}$ . While CO is a strong field ligand due to which the configuration of central atom becomes $3 d^{10} 4 s^{0}$ .

The 4s and 4p orbitals get hybridized to produce $s p^{3}$ orbitals.