Question

if the radius of the first orbit of hydrogen atom is x Å, then the radius of the 2nd orbit of hydrogen atom will be
3x Å
4x Å
6x Å
12x Å



(please help me)
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Answer 1

Answer:

radius of orbit ( r ) = Ro × n^2 / Z

for first orbit r = Ro × 1 / 1 = 1

Ro = 1

for second orbit r = Ro × ( 2 )^2 = 4 Angstrom