Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryCoordination Compounds1 Mark
Question
The value of $X$ in $\ce{Fe(CO)_2(NO)x},$ is$:$
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Answer
The coordination sphere of a coordination compound or complex consists of the central metal atom$/$ion plus its attached ligands.
The coordination sphere is usually enclosed in brackets when written in a formula.
The coordination number is the number of donor atoms bonded to the central metal atom$/$ion.
Most metal complexes or compounds except for alloys.
Specific examples include hemoglobin and $Ru_{3}(CO)_{12}.$
So the total electron should be $18$
valence electron of iron is $= 8$
$CO$ gives $= 2e^−, NO$ gives $3e^−$
$18 = 8 + (2 \times 2) + (3 \times x)$
$18 - 8 - 4 = 3x$
$x = 2$
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