Question

The correct statement(s) regarding the binary transition metal carbonyl compounds is (are)
(Atomic numbers: Fe = 26, Ni = 28)
(A) Total number of valence shell electrons at metal centre in Fe(CO)₅ or Ni(CO)₄ is 16
(B) These are predominantly low spin in nature
(C) Metal–carbon bond strengthens when the oxidation state of the metal is lowered
(D) The carbonyl C−O bond weakens when the oxidation state of the metal is increased

Answer 1

Answer:

Explanation:

(A) [Fe(CO)5] & [Ni(CO)4] complexes have 8 - electrons in their valence shell (4th shell).(B) Carbonyl complexes are predominantly low spin complexes due to strong ... (Atomic numbers: Fe=26, Ni=28). ... Total number of valence shell electrons at metal centre in Fe(CO)5​ or ... These are predominantly low spin in nature.

Answer 2

Answer:

C

Explanation: