The charge of an electron was determined by

The atomic mass of an element is expressed in grams, is known as

A _______ is the smallest particle of an element or compound.

The number of atoms present in one molecule of an element is

Atoms of one element can be changed into atoms of other elements by

____ is considered to be a divisible particle.

The total number of protons and neutrons present in atom is called

Volume occupied by imole of a gas at STP is

_____ is spherical and most of the space in its empty.

Neutron was discovered by