Home Courses Online Tests Forum

Forum Question BankThe most probable radius (in pm) for finding th…

MEDIUMMCQ SINGLEJEE Advanced ChemistryPhysical ChemistryAtomic StructureIntro

The most probable radius (in pm) for finding the electron in He⁺ is

0.0.0

1.52.9

2.26.5

3.105.8

Explanation

rₙ = 52.9 n²/Z pm. For He⁺ (Z=2), n=1: r = 52.9 × 1/2 = 26.45 ≈ 26.5 pm

Back to Question Bank

Practice More Like This

Take chapter-wise tests, track your progress, and master Atomic Structure.

Start Free Practice →

Sponsored

Master Chemistry for JEE, NEET & IChO

Access 19,000+ solved questions with expert explanations, chapter-wise tests, and full video lectures — all in one platform.

JEE Advanced Chemistry

Explore Courses →Sign In Free