Ethylene diaminetetraacetate (EDTA) ion is :

Match List-I with List-II :

	List-I		List-II
(a)	$${[Fe{(CN)_6}]^{3 - }}$$	(i)	5.92 BM
(b)	$${[Fe{({H_2}O)_6}]^{3 + }}$$	(ii)	0 BM
(c)	$${[Fe{(CN)_6}]^{4 - }}$$	(iii)	4.90 BM
(d)	$${[Fe{({H_2}O)_6}]^{2 + }}$$	(iv)	1.73 BM

Choose the correct answer from the options given below.

The calculated spin only magnetic moment of Cr²⁺ ion is?

Urea reacts with water to form A which will decompose to form B. B when passed through Cu²⁺ (aq), deep blue colour solution C is formed. What is the formula of C from the following?