The co-ordination number and the oxidation state of the element .M. in the complex `[M(en)_2(C_2O_4)] NO_2` {where (en) is ethan-1, 2-diamine} are respectively

Options

A. 6 and 3
B. 6 and 2
C. 4 and 2
D. 4 and 3

Answer

A

Explanation

(a) For the given coordinate compound, `[M(en)_2(C_2O_4)]NO_2`
(i) All the (3) lignnds are bi dented thus is coordinate number - 6
`x+0+2 xx (-2) = 0 -1`
`therefore` x(Oxidation number of M) = +3
`therefore` Option (a) is the correct answer.