Question

EAN of a metal carbonyl M(CO)x is 36. If atomic number of metal M is 26, what is the value of x?

• A. 4
• B. 8
• C. 5
• D. 6

Answer 1

Answer: (C)

5

Answer 2

x is number of lone pairs of electrons donated to central metal ion.

So, 26 + 2x = 36 or x = $\frac{10}{2}$ = 5