Radius of the 3rd shell of H-atom is:
Correct answer: B. 4.761 Å
- A. 5.761 Å
- B. 4.761 Å
- C. 3.761 Å
- D. 6.671 Å
Explanation
Radius of H-atom can be calculated by the following formula: rn = ro × n2 putting ro = 0.53 Å n = 3 r3 = 0.53 Å × 32 = (0.53 × 9) Å ≈ 0.5 x 9 = 4.5 Å 4.5 is closest to 4.7, hence this will be the correct answer Thus the radius of the third shell of H-atom is 4.761 × 10-10 or 4.761 Å.
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