There are six electrons in d orbital of compound [Ru(NO) en Cl]Br .
A chemical compound in which the central ion or atom is bound to a set number of atoms , molecules or ions called coordination entity.
For example[ CoCl3(NH3)3] .
The properties of coordination compounds are colour, magnetic susceptibility, solubility and volatility ,an ability to undergo oxidation reduction reaction and catalytic activity.
Here ,the electronic configuration of Ru is 4d⁷ 5s¹.
NO has +2 oxidation state, en is neutral, cl is -1.
x + 2 - 1 = -1
Simplifying the above equation, we get
⇒ x = -2.
Now the electronic configuration of Ru will be 4d⁶.
So there will be 6 electrons in outer orbital of d sub shell.
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