Match List I with List II List I Coordination entity List II Wavelength of light absorbed in nm A CoCl NH 3 5 2 + I. 310 B Co NH 3 6 3 + II. 475 C Co ( CN ) 6 3 - III. 535 D Cu H 2 O 4 2 + IV. 600 Cho

Question

Match List I with List II

	List I Coordination entity		List II Wavelength of light absorbed in nm
A	${[CoCl {({NH}_{3})}_{5}]}^{2 +}$	I.	$310$
B	${[Co {({NH}_{3})}_{6}]}^{3 +}$	II.	$475$
C	${[Co (CN)_{6}]}^{3 -}$	III.	$535$
D	${[Cu {(H_{2} O)}_{4}]}^{2 +}$	IV.	$600$

Choose the correct answer from the options given below :-

TestHub · Accepted Answer

Co-ordination compounds absorb a particular wavelength following certain rules.

$Wavelength of light absorbed \propto \frac{1}{Oxidation state of metal ion}$

$\propto \frac{1}{Strength of ligand}$

Ligand field strength - ${CN}^{-} > {NH}_{3} > H_{2} O > {Cl}^{-}$

	List I Coordination entity		List II Wavelength of light absorbed in nm
A	${[CoCl {({NH}_{3})}_{5}]}^{2 +}$	I.	$535$
B	${[Co {({NH}_{3})}_{6}]}^{3 +}$	II.	$475$
C	${[Co (CN)_{6}]}^{3 -}$	III.	$310$
D	${[Cu {(H_{2} O)}_{4}]}^{2 +}$	IV.	$600$

Chemistry - Coordination Chemistry Question with Solution | TestHub