1.
The atomic number of an element is 35 and mass number is 81 the number of electron in outermost Shell is
2.
lightest fundamental particle is
3.
Neutron are found in atoms of all elements except in
4.
Nuclei tend to have more neutrons than protons at high mask numbers because
5.
Proton was discovered by
6.
Atom was discovered by
7.
A neutral atom ( Atomic number > 1 ) consist of
8.
Number of electrons in the outermost orbit of the element of atomic number 15 is
10.
Rutherford scattering experiment is related to size of
11.
Number of unpaired electrons in inert gas is
12.
Who discovered that cathode rays are made up of elecrtrons
13.
α particle is identical with
14.
Nuclear theory of atom was put forward by
15.
The number of neutron in heavy hydrogen atom is
16.
Anode rays were discovered by
17.
The nature of anode rays depends upon
18.
The Nucleus of helium contains
19.
The fundamental particles present in the nucleus of an atom are
20.
The number of electron in the nucleus of -CONH2 is
21.
An electron is moving in Bohr's forth orbit.Its de-brogile wave length is λ what is the circumference of forth orbit.
22.
Mass of neutron is approximately.............. times of mass of electron
23.
Which of the following particle have more electron than Neutron
24.
The number of electron in the nucleus of Cl is
25.
An element has 8 electrons in the valence shell
26.
Rutherford experiment prove
27.
6 Proton are found in nucleus of
28.
The ratio of charge and mass would be greater for
29.
alpha particles are represented by
30.
What is the ratio of mass of an electron to the mass of proton
31.
The number of electron in one molecule of CO2
32.
The nucleus of the atom consist of
33.
Which is not deflected by magnetic field.
35.
The discovery of neutron becomes very late because
36.
The proton and neutron are collectively called as
37.
The mass of an atom is constituted mainly by
39.
Penetration power of proton is
40.
An elementary particle is
41.
Electromagnetic radiation with maximum wave length is
42.
Who discovered neutron ?
43.
Positive ions are formed from the neutral atom by the
44.
Which one is the following has unit positive charge and one amu mass
45.
The number of electron in the nucleus of C12 is
