Question

what is the valency of [Ni(CO)4] ?​

Answer 1

Answer:

any metal with its corbonyl form carries zero charge so valency of Ni in the compound is zero

hope this helps mate !!!

Answer 2

Explanation:

[Ni(CO)4]

for nickel,

0=x+4(1)+4×(-2)

0=x+4+(-8)

0=x+(-4)

x=4