Skip to content
New summer mock series is live Attempt timed papers for SSC, banking, and engineering entrances with updated syllabi for this season. View exams

Question

Which ion among the following isoelectronic species with 10 electrons has the lowest ionic radius?

Options

Choose one · Correct answer highlighted

Explanation

For isoelectronic species (10 electrons), ionic radius decreases with increasing nuclear charge. Al³⁺ (Z=13) has the lowest radius compared to Na+, Mg²⁺, or F⁻.