Question

Q19. In the complex [E(en),
(C202)]NO, (where (en) is
ethylenediamine) what are the
coordination number and the
oxidation state of the element 'E'
respectively.
(a) 6 and 2
(b) 2 and 2
(c) 4 and 3
(d) 6 and 3​

Answer 1

Explanation:

6 is called coordination number of the element E in the complex. - We know that oxidation states of an element can be calculated by adding the charges of all the ligands and the counter ions (i.e., ions present outside the central atom). Thus, the oxidation state of E in the complex is +3.

Answer 2

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