These MCQs are intended for checking your Physics subject, Chapter Atoms knowledge.

Half-life of a substance depends on:

The principle that a quantum orbital cannot be occupied by more than two electrons was given by:

The energy equivalent to one atomic mass unit is :

According to Bohr’s theory of hydrogen atom, the radius r of stationary orbit are related to principal quantum number n as:

The binding energy of a deuteron is about:

Fg and Fe represents the gravitational and electrostatic force respectively between two electrons situated at some distance the ratio Fg/Fe is if the order of:

P-decay produces:

Natural radioactivity was discovered by:

The total energy that will be released if a nucleus is built from its constituents is called the:

Transmutation of nuclei was discovered by:

Isotones have the same:

An atom stays in an excited state for about:

Who explained the splitting of special lines in magnetic field?

Isobars have the same:

For ionization of excited Hydrogen atom, the, required energy is:

Artificial radioactivity was discovered by:

The energy equivalent to mass defect is called :

The mass of a neutron is:

The concept of electron spin was introduced by:

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