1.
Positive ions are formed from the neutral atom by the
2.
The number of electron in one molecule of CO2
4.
The ratio of charge and mass would be greater for
5.
Rutherford scattering experiment is related to size of
6.
Atom was discovered by
7.
Which is not deflected by magnetic field.
8.
Who discovered that cathode rays are made up of elecrtrons
9.
Nuclear theory of atom was put forward by
10.
An electron is moving in Bohr's forth orbit.Its de-brogile wave length is λ what is the circumference of forth orbit.
11.
Nuclei tend to have more neutrons than protons at high mask numbers because
12.
The discovery of neutron becomes very late because
14.
The number of neutron in heavy hydrogen atom is
15.
A neutral atom ( Atomic number > 1 ) consist of
16.
The atomic number of an element is 35 and mass number is 81 the number of electron in outermost Shell is
17.
Penetration power of proton is
18.
The mass of an atom is constituted mainly by
19.
α particle is identical with
20.
6 Proton are found in nucleus of
21.
An elementary particle is
22.
The nature of anode rays depends upon
23.
Electromagnetic radiation with maximum wave length is
24.
An element has 8 electrons in the valence shell
25.
Proton was discovered by
26.
The number of electron in the nucleus of C12 is
28.
Rutherford experiment prove
29.
alpha particles are represented by
30.
Which one is the following has unit positive charge and one amu mass
31.
What is the ratio of mass of an electron to the mass of proton
32.
The nucleus of the atom consist of
33.
The fundamental particles present in the nucleus of an atom are
34.
Anode rays were discovered by
35.
Number of electrons in the outermost orbit of the element of atomic number 15 is
36.
The proton and neutron are collectively called as
37.
Mass of neutron is approximately.............. times of mass of electron
38.
Number of unpaired electrons in inert gas is
39.
lightest fundamental particle is
40.
Who discovered neutron ?
41.
The Nucleus of helium contains
42.
The number of electron in the nucleus of -CONH2 is
43.
Which of the following particle have more electron than Neutron
44.
The number of electron in the nucleus of Cl is
45.
Neutron are found in atoms of all elements except in
