JEE Main 2022 · 27 Jul · Shift 2 · Chemistry Q70

ChemistrySingle correct+4 / -1Question 70 of 90

Low oxidation state of metals in their complexes are common when ligands :

have good π-accepting character

have good σ-donor character

are having good π-donating ability

are having poor σ-donating ability

Answer and worked solution

Official answer: A

π-acceptor ligands (CO, CN⁻) take electron density back from the metal, stabilising low oxidation states.

(A)

Topics:Metal carbonyls and EAN rule

JEE Main 2022 · 27 Jul · Shift 2, Chemistry question 70