WAEC Chemistry 2021 Theory — Question 8

Question 8 of 31 from the West African Examinations Council (WAEC) Chemistry 2021 Theory paper, with the correct answer and a full explanation.

1(h). Define atomic radius.

Model answer

Atomic radius is half the distance between the nuclei of two close (bonded/touching) atoms in a molecule — a measure of the size of an atom, from the centre of the nucleus to the boundary of the surrounding electron shells.

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