__________________ discovered that cathode rays are deflected by magnetic and electric field.

_______________ loses two electrons from its valence shell forming a cation.

_____________________ is the electronic configuration of nitrogen atom.

According to _______________ atomic theory atoms are divisible and destructible

According to _______________ atomic theory atoms consisting of subatomic particles like electrons ,protons and neutrons.

Uranium has ________________ isotopes.

Potassium has ______________ isotopes

_____________ gains three electron in its valence shell forming an anion with three negative charge.

________________ proposed a theory of atom known as the atomic theory.

________________ is the electrons in its valence shell forming an anion.