Question

Match the correct atomic radius with the element.

Element	Atomic radius (pm)
\[\ce{Be}\]	74
\[\ce{C}\]	88
\[\ce{O}\]	111
\[\ce{B}\]	77
\[\ce{N}\]	66

Answer 1

Element	Atomic radius (pm)
\[\ce{Be}\]	111
\[\ce{C}\]	77
\[\ce{O}\]	66
\[\ce{B}\]	88
\[\ce{N}\]	74

Explanation:

All the given elements are of same period and along period, atomic radii decrease because effective nuclear charge increases.