1.
Positive ions are formed from the neutral atom by the
3.
The nature of anode rays depends upon
4.
Anode rays were discovered by
5.
An element has 8 electrons in the valence shell
7.
Penetration power of proton is
8.
Number of electrons in the outermost orbit of the element of atomic number 15 is
9.
The number of electron in the nucleus of C12 is
10.
The discovery of neutron becomes very late because
11.
The atomic number of an element is 35 and mass number is 81 the number of electron in outermost Shell is
12.
The proton and neutron are collectively called as
13.
α particle is identical with
14.
The Nucleus of helium contains
15.
Which is not deflected by magnetic field.
16.
Neutron are found in atoms of all elements except in
17.
Electromagnetic radiation with maximum wave length is
18.
Number of unpaired electrons in inert gas is
20.
Proton was discovered by
21.
Who discovered neutron ?
22.
A neutral atom ( Atomic number > 1 ) consist of
23.
Mass of neutron is approximately.............. times of mass of electron
24.
The ratio of charge and mass would be greater for
25.
alpha particles are represented by
26.
What is the ratio of mass of an electron to the mass of proton
27.
The mass of an atom is constituted mainly by
28.
The number of neutron in heavy hydrogen atom is
29.
Which of the following particle have more electron than Neutron
30.
The number of electron in one molecule of CO2
31.
6 Proton are found in nucleus of
32.
An elementary particle is
33.
Rutherford experiment prove
34.
Rutherford scattering experiment is related to size of
35.
The nucleus of the atom consist of
36.
The fundamental particles present in the nucleus of an atom are
37.
An electron is moving in Bohr's forth orbit.Its de-brogile wave length is λ what is the circumference of forth orbit.
38.
The number of electron in the nucleus of -CONH2 is
39.
Atom was discovered by
40.
The number of electron in the nucleus of Cl is
41.
Which one is the following has unit positive charge and one amu mass
42.
Nuclear theory of atom was put forward by
43.
lightest fundamental particle is
44.
Who discovered that cathode rays are made up of elecrtrons
45.
Nuclei tend to have more neutrons than protons at high mask numbers because
