1.
Rutherford scattering experiment is related to size of
2.
Nuclei tend to have more neutrons than protons at high mask numbers because
3.
The number of electron in the nucleus of -CONH2 is
4.
Electromagnetic radiation with maximum wave length is
5.
The discovery of neutron becomes very late because
7.
The Nucleus of helium contains
8.
lightest fundamental particle is
9.
Which is not deflected by magnetic field.
11.
A neutral atom ( Atomic number > 1 ) consist of
13.
Which one is the following has unit positive charge and one amu mass
14.
The fundamental particles present in the nucleus of an atom are
15.
alpha particles are represented by
16.
Anode rays were discovered by
17.
Positive ions are formed from the neutral atom by the
18.
The number of electron in one molecule of CO2
19.
Which of the following particle have more electron than Neutron
20.
Number of unpaired electrons in inert gas is
21.
The nucleus of the atom consist of
22.
Number of electrons in the outermost orbit of the element of atomic number 15 is
23.
Who discovered neutron ?
24.
The ratio of charge and mass would be greater for
25.
Neutron are found in atoms of all elements except in
26.
The mass of an atom is constituted mainly by
27.
An elementary particle is
28.
An electron is moving in Bohr's forth orbit.Its de-brogile wave length is λ what is the circumference of forth orbit.
29.
An element has 8 electrons in the valence shell
30.
Penetration power of proton is
31.
Proton was discovered by
32.
6 Proton are found in nucleus of
33.
The atomic number of an element is 35 and mass number is 81 the number of electron in outermost Shell is
34.
The proton and neutron are collectively called as
35.
Who discovered that cathode rays are made up of elecrtrons
36.
The number of neutron in heavy hydrogen atom is
37.
Mass of neutron is approximately.............. times of mass of electron
38.
Atom was discovered by
39.
Rutherford experiment prove
40.
The nature of anode rays depends upon
41.
Nuclear theory of atom was put forward by
42.
α particle is identical with
43.
The number of electron in the nucleus of Cl is
44.
The number of electron in the nucleus of C12 is
45.
What is the ratio of mass of an electron to the mass of proton
