The mass of neutron is nearly
Neutron is a fundamental particle carrying
A charge of +1 unit and a mass of 1 unit
No charge and a mass of 1 unit
No charge and no mass
A charge of –1 and a mass of 1 unit
The discovery of neutron becomes very late because
Neutrons are present in nucleus
Neutrons are highly unstable particles
Neutrons are chargeless
Neutrons do not move
Which one of the following pairs is not correctly matched
Rutherford-Proton
J. J. Thomson-Electron
J. H. Chadwick-Neutron
Bohr-Isotope
An elementary fundamental particle is
An element present in a compound
An atom present in an element
A sub-atomic particle
A fragment of an atom
Nitrogen atom has an atomic number of 7 and oxygen has an atomic number 8. The total number of electrons in a nitrate ion will be
8
16
32
64
19
20
18
35
The number of neutron in tritium is
1
2
3
0
The total number of protons in one molecule of nitrogen dioxide
23
46
69
92
Number of neutrons in heavy hydrogen atom is
0
1
2
3