A. Gamma-rays
B. Alpha-rays
C. Beta-rays
D. X-rays
Related Mcqs:
- Alpha (α) particles are helium (He) nucleus with a charge of __________ ?
A. e
B. 2e
C. 3e
D. 4eSubmitted by: Rashid Mehmood
- The relative attraction of the nucleus for the electrons in a chemical bond is called _________________?
A. Ionization energy
B. Electron affinity
C. Electro negativity
D. None of the above - Space around nucleus where finding probability of electrons is maximum is called ____________________?
A. Orbital
B. Orbit is elliptical
C. subshell
D. Electron cloud - 2nd orbit is ___________ away from nucleus of H-atom as compared to 1st orbit is ?
A. 2-times
B. 3-times
C. 4-times
D. 6 times - Which discovery caused a revision in the periodic law as stated by Mendeleev ?
A. Location of nucleus by Rutherford
B. Atomic number by Moseley
C. X-rays by Roentgen
D. Natural radioactivity by Henry Bacquerel. - The discovery of neutron became very late because _______ ?
A. It does not carry any charge
B. It does not move
C. It is a fundamental particle
D. It is present in nucleusSubmitted by: Rashid Mehmood
- Which one of the following results in the discovery of proton.
A. Cathode rays
B. Canal rays
C. X-rays
D. Alpha raysSubmitted by: Babar Ali Kunbhar
- The nucleus of an atom of every element will always contain____________________?
A. neutrons
B. protons and electrons
C. protons
D. protons and neutrons - A helium nucleus comprising of two protons and two neutrons with a charge of 2e is _________ ?
A. Beta particle
B. Gamma particle
C. Alpha particle
D. Negative particleSubmitted by: Rashid Mehmood
- Atoms of all the elements always contain in nucleus:
A. Proton and neutron
B. Neutron and electron
C. Proton
D. NeutronSubmitted by: Shumail Bashir