1.
What is the ratio of mass of an electron to the mass of proton
2.
Number of unpaired electrons in inert gas is
3.
The mass of an atom is constituted mainly by
4.
Neutron are found in atoms of all elements except in
5.
The number of electron in the nucleus of -CONH2 is
6.
The Nucleus of helium contains
7.
The atomic number of an element is 35 and mass number is 81 the number of electron in outermost Shell is
9.
The number of electron in the nucleus of Cl is
10.
The number of electron in the nucleus of C12 is
11.
The nucleus of the atom consist of
12.
lightest fundamental particle is
13.
Which of the following particle have more electron than Neutron
14.
Number of electrons in the outermost orbit of the element of atomic number 15 is
15.
The number of electron in one molecule of CO2
16.
alpha particles are represented by
17.
The discovery of neutron becomes very late because
18.
Mass of neutron is approximately.............. times of mass of electron
19.
Which is not deflected by magnetic field.
20.
Who discovered that cathode rays are made up of elecrtrons
21.
6 Proton are found in nucleus of
22.
Atom was discovered by
23.
The fundamental particles present in the nucleus of an atom are
24.
Nuclear theory of atom was put forward by
25.
Penetration power of proton is
26.
Electromagnetic radiation with maximum wave length is
27.
An electron is moving in Bohr's forth orbit.Its de-brogile wave length is λ what is the circumference of forth orbit.
28.
Proton was discovered by
29.
A neutral atom ( Atomic number > 1 ) consist of
30.
Positive ions are formed from the neutral atom by the
31.
An elementary particle is
32.
Nuclei tend to have more neutrons than protons at high mask numbers because
33.
An element has 8 electrons in the valence shell
34.
Who discovered neutron ?
35.
Anode rays were discovered by
36.
Rutherford experiment prove
37.
α particle is identical with
38.
Which one is the following has unit positive charge and one amu mass
39.
The proton and neutron are collectively called as
40.
The number of neutron in heavy hydrogen atom is
42.
Rutherford scattering experiment is related to size of
43.
The nature of anode rays depends upon
45.
The ratio of charge and mass would be greater for
