Chemistry · Atomic Structure
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What is the radius of 3rd orbit of electron in H- atom.
- A
3.39A
- B
4.761A
- C
5.29 x 10^11 A
- D
9.7A
The radius of an electron orbit in a hydrogen atom can be calculated using the Bohr model, which gives the radius of the nth orbit as:
rn = n² × 0.529 Å
where n is the principal quantum number.
For the 3rd orbit, n = 3, so:
r₃ = 3² × 0.529 Å
= 9 × 0.529 Å
= 4.76 Å
3.39 Å is not a correct value for the radius of the 3rd orbit.
The radius of an electron orbit in a hydrogen atom can be calculated using the Bohr model, which gives the radius of the nth orbit as:
rn = n² × 0.529 Å
where n is the principal quantum number.
For the 3rd orbit, n = 3, so:
r₃ = 3² × 0.529 Å
= 9 × 0.529 Å
= 4.76 Å
5.29 × 10^11 Å is an extremely large value, far beyond the atomic scale.
9.7 Å is not a correct value for the radius of the 3rd orbit.
Tagged under Chemistry · Atomic Structure · 2023