The atoms of the same element having the same atomic number but different mass numbers is called
Isotopes
Isobars
Isotones
Isotherms
The orbits or shells are also known as
Energy levels
Orbitals
Ways
Paths
An isotope which is used in the treatment of cancer.
Iodine
cobalt
Chlorine
Uranium
A very small fraction of α-particles were deflected by 180°was proposed by
Goldstein
Rutherford
J.J Thomson
Chadwick
Protium, deuterium and tritium are the isotopes of
Carbon
Hydrogen
Oxygen
Which of the following represents the correct electronic configuration?
2,8,9
2,8,6
2,8,10
2,7,3
Electron was identified by
John Dalton
Which of the following represents the correct electronic configuration of Neon?
2,8
2,6,2
2,4,4
2,5,5
Maximum number of electrons that can be accommodated in the L shell is
2
8
18
36
Chlorine occurs in nature in two isotopic forms in the ratio
1:2
2:1
1:3
3:1
