Previous Year NEET Question- Structure Of Atom

1. The wavelength of the first line of the Lyman series for hydrogen atom is 1216 Å. The wavelength of the second line of the same series is given by

λ = 1216 Å * 9/16 = 608 Å

So the answer is (a).

2. The electronic configuration of an element is 1s22s22p63s23p63d54s1. The element is chromium.

3. The energy of an electron in the first Bohr orbit of the hydrogen atom is -13.6 eV. The energy value of the electron in the second Bohr orbit of the hydrogen atom is given by

E = -13.6 eV/n^2 = -13.6 eV/2^2 = -6.8 eV

So the answer is (b).