STANDARDChemistry-Atomic Structure
STANDARD Chemistry Bohr's Model MCQ Question
Type: MCQ-numerical-Medium-Class 11
If n = 2 for He⁺ ion then find out the wavelength.
A
3.32 Å
B
6.42 Å
C
1.47 Å
D
2.37 Å
Correct Answer
Option A
Detailed Explanation
Using the formula λ = 2π × 0.529 × n² / Z, where Z is the atomic number of He (Z = 2), we find λ = 3.32 Å.
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