A. Less atomic number
B. Less atomic weight
C. More atomic number
D. More atomic weight
Related Mcqs:
- The half life period of a radioactive element is 100 days. After 400 days, one gm of the element will be reduced to ______________ gm?
A. 1/4
B. 1/8
C. 1/2
D. 1/16 - Radioactive decay of a material involves a _____________ order reaction?
A. Third
B. Second
C. First
D. Zero - Emission of β-particles during radioactive decay of a substance is from__________________?
A. Innermost shell
B. Nucleus
C. Outermost shell
D. None of these - In β-decay of radioactive material, the ratio of neutron to proton____________________?
A. Increases
B. Remain same
C. Decreases
D. Is unpredictable; may increase or decrease - Radioactive decay is a _____________ change?
A. Chemical
B. Nuclear
C. Physical
D. None of these - A radioactive isotope undergoes decay with respect to time following _____________ law?
A. Logarithmic
B. Exponential
C. Linear
D. Inverse square - The half life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a Geiger Muller counter from its known quantity. If the half life period of a radioactive substance is one month, then____________?
A. 3/4th of it will disintegrate in two months
B. It will completely disintegrate in two months
C. It will completely disintegrate in four months
D. 1/8th of it will remain intact at the end of four months - The mass number of an element is equal to the number of _____________ in the nucleus?
A. Electrons
B. Neutrons
C. Protons
D. Neutrons plus protons (i.e., nucleons) - 75% of a radioactive element decays in 6 hours. Its half life period is ______________ hours?
A. 3/4
B. 1/6
C. 3
D. 4 - The half life period of a radioactive element depends upon the___________________?
A. Temperature
B. Pressure
C. Amount of element present
D. None of these
