Is Cis-[Cr(en)2Cl2]Cl paramagnetic or diamagnetic?

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Solution

$c i s - [C r (e n) 2 C l_{2}] + C l^{-}$
x + 0 - 2 = +1
Oxidation state, x =+3
Coordination number is 6 as 'en' is didentate. $C r^{3 +}$ is a cfi case, so it is paramagnetic.

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e n = H_{2} N C H_{2} C H_{2} N H_{2}; A t . N o s . : T i = 22; C r = 24; C o = 27; P t = 78

	List - I		List - II
(P)	$[C r (N H_{3})_{4} C l_{2}] C l$	1.	Paramagnetic and exhibits ionisation isomerism.
(Q)	$[T i (H_{2} O)_{5} C l] (N O_{3})_{2}$	2.	Diamagnetic and exhibits cis-trans isomerism
(R)	$[P t (e n) (N H_{3}) C l] N O_{3}$	3.	Paramagnetic and exhibits cis-trans isomerism
(Q)	$[C o (N H_{3})_{4} (N O_{3})_{2}] N O_{3}$	4.	Diamagnetic and exhibits ionisation isomerism

Carnation is diamagnetic or paramagnetic

e n = H_{2} N C H_{2} C H_{2} N H_{2};

T i = 22; C r = 24; C o = 27; P t = 78

$L i s t - I$	$L i s t - I I$
(P)	$[C r (N H_{3})_{4} C l_{2}] C l$	1.	$Paramagnetic and exhibits ionisation isomerism$
(Q)	$[T i (H_{2} O)_{5} C l] (N O_{3})_{2}$	2.	$Diamagnetic and exhibits cis-trans isomerism$
(R)	$[P t (e n) (N H_{3}) C l] N O_{3}$	3.	$Paramagnetic and exhibits cis-trans isomerism$
(S)	$[C o (C H_{3})_{4} (N O_{3})_{2}] N O_{3}$	4.	$Diamagnetic and exhibits ionisation isomerism$

H_{2} N C H_{2} C H_{2} N H_{2}

T i = 22; C r = 24; C o = 27; P t = 78

\begin{matrix} L i s t I & L i s t I I (P) [C r (N H_{3})_{4} C l_{2}] C l & (1) P a r a m a g n e t i c a n d e x h i b i t s i o n i z a t i o n i s o m e r i s m (Q) [T i (H_{2} O)_{5} C l] (N O_{3})_{2} & (2) D i a m a g n e t i c a n d e x h i b i t s c i s - t r a n s i s o m e r i s m (R) [P t (e n) (N H_{3}) C l] N O_{3} & (3) P a r a m a g n e t i c a n d e x h i b i t s c i s - t r a n s i s o m e r i s m (S) [C o (N H_{3})_{4} (N O_{3})_{2}] N O_{3} & (4) D i a m a g n e t i c a n d e x h i b i t s i n o n i z a t i o n i s o m e r i s m \end{matrix}

p block , s block, d block elments is usally paramagnetic or diamagnetic

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