Question
Chemistry Question on Werner’s Theory of Coordination Compounds
The effective atomic number of cobalt in the complex [Co(NH3)6]3+ is
A
36
B
24
C
33
D
30
Answer
36
Explanation
Solution
The coordination number of the metal is 6 and the oxidation state of the metal is +3
EAN = at. no. of central atom - oxidation state +2 (coordination number of the metal)
=27−3+2(6)
=27−3+12=36
So, the correct answer is (A): 36