JEE Main 2022 · 27 Jun · Shift 2 · Chemistry Q65

ChemistrySingle correct+4 / -1Question 65 of 90

The correct order of increasing ionic radii is

\mathrm{Mg^{2+}<Na^+<F^-<O^{2-}<N^{3-}}

\mathrm{N^{3-}<O^{2-}<F^-<Na^+<Mg^{2+}}

\mathrm{F^-<Na^+<O^{2-}<Mg^{2+}<N^{3-}}

\mathrm{Na^+<F^-<Mg^{2+}<O^{2-}<N^{3-}}

Answer and worked solution

Official answer: A

Isoelectronic ions (10 e). Radius falls as nuclear charge rises: $\mathrm{Mg^{2+}<Na^+<F^-<O^{2-}<N^{3-}}$ .

(A)

Topics:Atomic and ionic radii

JEE Main 2022 · 27 Jun · Shift 2, Chemistry question 65