Question

answer with solution please........will follow the one who gives the best answer​

Answer 1

Answer:

Explanation:Energy corresponding to 970 A in ev:

12400/wavelength in A= 12400/970=12.77 eV

Now energy difference between first two shells of H atom is:

i.e. -13.6Z^2/dn^2=-13.6(1/4–1)=10.2 eV

Clearly the wavelength energy falls under the region n=1 to n=2:

Hence number of possible spectral lines is only one i.e. from 2 to 1.

Or you could also use the formula: n(n-1)/2 where n=2.

Answer 2

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