Question

Which of the following has p π – d π bonding ?
(a) NO₃⁻ (b) SO₃²⁻ (c) BO₃³⁻ (d) CO₃²⁻

Answer 1

Explanation:

SO₃²⁻ has p π – d π bonding.

Answer 2

SO₃²⁻ has p π – d π bonding.

Explanation:

• In SO₃²⁻, the central atom is the sulphur.

• It has the hybridization of sp3.

• The three sigma bonds are formed between three oxygen atoms.

• One pie bond is formed between oxygen and sulphur.

• The s orbital of sulphur is fulfilled by 2 electrons.

• So the electron is moved to the vacant d orbital of sulphur.

• Now in oxygen, there are 2 vacant orbitals.

• These orbitals are 2px and 2py orbitals.

• So the pie bond formed between the sulphur and oxygen is p π – d π  bond.

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