Question

calculate the energy values of the electron in the second orbit of hydrogen atom . what will be the radius of this orbit ?​

Answer 1

The Bohr radius (a

0

or r

Bohr

) is a physical constant, approximately equal to the most probable distance between the nucleus and the electron in a hydrogen atom in its ground state. It is named after Neils Bohr, due to its role in the Bohr model of an atom. Its value is 5.2917721067(12)×10−11 m

Bohr radius for nth orbits,

r_n = .529 n^2/z; its applicable only for H,He+,Li+2

Where ,

n is no. of orbits, n=1,2,3…………

z is atomic no.of hydrogen which is equal to 1.

A/c to question,

We have required for finding Bohr radius in 2nd orbit, we have z=1, n=2.

So that ,

r_n = .529 n^2/z = .529 × 2^2/1 = .529 × 4 = 2.116 ans__

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