NCERT Exercise 12.9 - Atoms
Question: In accordance with the Bohr’s model, find the quantum number that characterises the earth’s revolution around the sun in an orbit of radius 1.5 × 1011 m with orbital speed 3 × 104 m/s. (Mass of earth = 6.0 × 1024 kg.)
Answer: **NCERT answer:** 2.6 × 1074
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