JEE Main · 2023 · 25 Jan 2023 · Shift 1 · p-Block Elements

The total number of lone pairs of electrons on oxygen atoms of ozone is ______

Answer: 6

Solution

Ozone carries eighteen valence electrons. Its central oxygen is joined to one terminal oxygen by a double bond and to the other by a single bond, and these bonds use six electrons. The remaining twelve electrons sit as lone pairs: the doubly bonded terminal oxygen holds two lone pairs, the singly bonded terminal oxygen holds three, and the central oxygen, which bears a positive formal charge, holds one. The total number of lone pairs on the oxygen atoms is six.

JEE Main · 2023 · 25 Jan 2023 · Shift 1 · Integer answer

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