JEE Main Chemistry · Classification of Elements and Periodicity in Properties

Isoelectronic Species Radii Comparison

Isoelectronic Species Radii Comparison (Classification of Elements and Periodicity in Properties) was asked 2 times in 2 JEE Main shifts, 2021, out of the 42 shifts Lumi analysed.

Times asked: 2; in 2 shifts
Years: 2021
Usual format: Single correct; Application
Pattern: Gone quiet; repeats across shifts

How it is asked

Order/values of ionic radii in isoelectronic series
Order/ranking of ionic radii

Difficulty

Easy 2Medium 0Hard 0

Where it sits

Chapter: Classification of Elements and Periodicity in Properties. Topic: Periodic Trends, 42 questions over 18 ideas.

All 2 questions

Newest first, each with its options and official answer.

25 Jul 2021, Shift 1 · Q33The ionic radii of $\mathrm{K^+}$ , $\mathrm{Na^+}$ , $\mathrm{Al^{3+}}$ and $\mathrm{Mg^{2+}}$ are in the order :EasySingle correct
18 Mar 2021, Shift 1 · Q34The ionic radius of $\mathrm{Na^+}$ ion is 1.02 Å. The ionic radii (in Å) of $\mathrm{Mg^{2+}}$ and $\mathrm{Al^{3+}}$ , respectively, are :EasySingle correct