The particles in the anode rays, when hydrogen gas was used in the discharge tube, was given the name
Proton
Electron
Neutron
Positron
For curing cancer of thyroid gland which isotope is used?
Carbon-14
Sodium-24
Cobalt-60
Iodine-131
Which is used for curing cancer?
The chemical force that keeps all the atoms in any molecule together is known as
Valency
Chemical bond
Electronic configuration
Octet rule
The noble gases contains how many electrons in their outermost shell?
2
4
6
8
Which can exist independently in nature.
Ions
Molecules
Cations
Anions
The nucleus of a heavier atom is split into smaller fragments and a large amount of energy is released in
Nuclear fission
Nuclear fusion
Radioactivity
Nuclear radiation
Electrons in the outermost shell of an atom are called its
Inner electrons
outer electrons
valence electrons
emitted electrons
Alpha particle is an ion of
H+
He+
He2+
C+
Who confirmed that electron is an essential constituent of matter?
J.J.Thomson
G.J.Stoney
Rutherford
Bohr
