According to _______________ atomic theory atoms consisting of subatomic particles like electrons ,protons and neutrons.
Modern
Elemental
Dalton's
Basic
Uranium has ________________ isotopes.
1
3
5
7
____________________ discovered cathode rays.
Rutherford
J J Thomson
Goldstein
William crooke
Potassium has ______________ isotopes
2
4
6
8
According to ______________ atomic theory an atom is the smallest unit of matter which takes part in a chemical reaction
_____________ gains two electrons in its valence shell forming an anion.
Oxygen
Chlorine
Nitrogen
Calcium
________________ is the electrons in its valence shell forming an anion.
_______________ is the positively charged particles in an atom.
Electron
Proton
Neutron
Positron
Oxygen has_________ isotopes.
According to _______________ atomic theory atoms are divisible and destructible
