If the speed of electron in the Bohr's first orbit of H-atom is

CHEMISTRY · Single correct · CBSE · Chemistry · Structure of Atom · Structure of Atom

Problem

If the speed of electron in the Bohr's first orbit of H-atom is XX, the speed of the electron in the third orbit is : (1) X/9X/9 (2) X/3X/3 (3) 3X3X (4) 9X9X

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