Advertisements
Advertisements
प्रश्न
When does the nucleus of an atom tend to become radioactive?
Advertisements
उत्तर
When the number of neutrons exceeds much than the number of protons in a nuclei, it become unstable or radioactive.
APPEARS IN
संबंधित प्रश्न
A radioactive substance is oxidized. Will there be any change in the nature its radioactivity? Give a reason for your answer
State the energy conversion taking place in a cathode ray tube
Under which conditions does the nucleus of an atom tend to radioactive?
What happens to the mass number of an element when (i) an α -particle, (ii) a β -particle, and (iii) γ -radiation is emitted?
In the following fig. shows a radioactive source S in a thick lead container. The radiations pass through an electric field between the plates P and Q. Complete the diagram to show the paths of α , β and γ radiations.
Why is the source S placed in a thick lead container?
In a cathode ray tube state the purpose of the fluorescent screen.
In U238 ore containing Uranium the ratio of U234 to Pb206 nuclei is 3. Assuming that all the lead present in the ore is final stable product of U238. Half life of U238 to be 4.5 × 109 years and the age of ore is ______ × 109 years. (in 109 years)
When an α-particle of mass m moving with velocity ν bombards on a heavy nucleus of charge Ze, its distance of closest approach from the nucleus depends on m as:
