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The coordination number and the oxidation state of the element 'E' in the complex $[E(en)_2(C_2O_4)]NO_2$ when 'en' is ethylenediamine

$(a)\;6\;and\;2\qquad(b)\;4\;and\;2\qquad(c)\;4\;and\;3\qquad(d)\;6\;and\;3$

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The coordination number$\rightarrow$6
The oxidation state of element 'E'$\rightarrow$3
Hence (d) is the correct answer.
answered Feb 3, 2014 by sreemathi.v
 
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