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According to Bohr's model of hydrogen atom, which of the following statement is incorrect? (1) Radius of 4th orbit is four times larger than that of 2nd orbit (2) Radius of 6th orbit is three times larger than that of 4th orbit (3) Radius of 8th orbit is four times larger than that of 4th orbit (4) Radius of 3rd orbit is nine times larger than that of 1st orbit

1. Radius of 4th orbit is four times larger than that of 2nd orbit
2. Radius of 6th orbit is three times larger than that of 4th orbit
3. Radius of 8th orbit is four times larger than that of 4th orbit
4. Radius of 3rd orbit is nine times larger than that of 1st orbit

Correct answer: Radius of 6th orbit is three times larger than that of 4th orbit

Solution

The radius of an orbit in Bohr's model is proportional to the square of the principal quantum number (n), meaning the radius of the 6th orbit is actually 36 times larger than that of the 1st orbit, not three times larger than the 4th orbit, making this statement incorrect.

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