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Which of the following pairs of ions are isoelectronic and isostructural

Which of the following pairs of ions are isoelectronic and isostructural

Options

(a) CIO₃⁻,CO₃²⁻
(b) SO₃²⁻,NO₃⁻
(c) CIO₃⁻,SO₃²⁻
(d) CO₃²⁻,SO₃²⁻

Correct Answer:

CIO₃⁻,SO₃²⁻

Explanation:

ClO₃⁻ and SO₃⁻ ² both have same number of electrons (42) and central atom in each being sp³ hybridised. Both are having one lone pair on central atom hence they are pyramidal.

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