Structure of th...

Which of the following sub atomic particle has the highest mass?

Match the atomic numbers 4, 14, 8, 15, and 19 with a metal of valency 1.

Valence electrons are those which are present :

Rutherford's scattering experiment led to the discovery of :

The particle used by Rutherford in $$\alpha$$-ray scattering experiment was :

The shell closest to the nucleus of an atom is:

Charge on a neutron is __________.

The element with atomic number 56 is likely to have the same outer shell configuration as the element with atomic number __________.

The space between proton and electron in hydrogen atom is :

The fundamental particle which has no charge and has a mass almost equal to that of the positively charged fundamental particle is ________.