Question
The Bohr orbit radius for the hydrogen atom (n=1) is approximately 0.530 Å. The radius for the first excited state (n=2) orbit is (in Å )
BITSAT
Chemistry
Structure of Atom
2023
BITSAT 2023 (Memory Based Paper 1)
BITSAT Chemistry Question (2023) — Solution
Options
- A. 0.13
- B. 1.06
- C. 4.77
- D. 2.12
Answer
D. 2.12
Step-by-step solution
Given : Radius of hydrogen atom =0.530 Å, Number of excited state (n)=2 and atomic number of hydrogen atom (Z)=1. We know that the Bohr radius (r)= n^2 Z radius of atom = (2)^2 1 0.530 =4 0.530=2.12 Å
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