Question

30
Which property of elements is not a whole number
1) Mas number 2) Anummer
1) Amd weight
When the speed of electron increases the specific charge
1) decreases
2) eness
3) remain same
The experimental evidence for the existence of atomic nucleus com
1 Millikan's oil drop method
2) Atomie wbsorption spec
3) The magnetic bending of cathode rays 4) Alpha scattering by a thin
Though the three fundamental particles are present in almost all clements
ment does not possess
1) proton
2) electron
3) neutron
4) nucleons
The atomic weight of an element is 23 and atomic number is 11. The nu
protons, cloctrons and neutrons respectively present in the atom of the element
1) 11, 11, 12
2) 12. 12. 11
3) 11, 12, 11
4) 12.11.12
Atomic number is equal to the
1) number of neutrons in the nucleus 2) number of protons in the nucleus
3) sum of protons and neutrons
4) atomic mass of the element
0. An a-particle is identical with
1) proton
2) neutron
3) helium nucleus 4) electron
1. Heaviest particle is
1) Meson
2) Neutron
3) Proton
4) Electron
2. Which of the following is not iso electronic
1) Na
2) Mg2
4) CI
B. Pickout the iso electronic structures from the following (1) CH (ii) H, O
(iv) CH
1) i and il
2) in and iv
3) i and in
4) ii, iii and iv
Fundamental particle of the atom with maximum specific charge is
1) proton
2) neutron
3) electron
4) a-particle
When passing through a magnetic field, the greatest deflection is experienced
1) 0-rays
2) B-rays
3) y-rays
4) all equal
Which is not deflected by magnetic field?
1) noutron
2) positron
4) electron
Electrons in the atom are held by
1) coulombic forces 2) nuclear forces 3) gravitational forces 4) vander Waal's 1
The isotopes of an element differ in
1) The number of neutrons in the nuclcus 2) The charge on the nucleus
3) The number of extra-nuclear electrons
4) Both the nuclear charge and the number of extra-nuclear electrons.
Isobars have same number of
1) protons
2) electrons
3) nucleons
4) neutrons
Most elements have fractional atomic masses because
2) their isotopes have different masses
3) their isotopes have non-integral masses
4) the constituent neutrons, protons and electrons combine to give fractional masses,
3) proton
1) they have isotopes​

Answer 1

Answer:

Can you send the question clearly again