Structure of At...

In the phenomenon of electric discharge through
gases at low pressure, the coloured glow in the
tube appears as a result of:

The life span of atomic hydrogen is :

In Thomson's model of the atom, which of the following statements is/are correct?
(i) The mass of the atom is assumed to be uniformly distributed over the atom.
(ii) The positive charge is assumed to be uniformly distributed over the atom.
(iii) The electrons are uniformly distributed in the positively charged sphere.
(iv) The electrons attract each other to stabilize the atom.

When an electron do transition from n = 4 to n=2, the emitted line of spectrum will be:

The Bohr model of atoms:

The mass number of a nucleus is:

Isotopes have same____but different____.

When electron jumps from N shell to L shell, the energy is:

The minimum angular momentum that can be possessed by an electron in hydrogen atom is:

Which of the following do not represent Bohr's model of an atom correctly?