Advertisements
Advertisements
प्रश्न
What happens to the mass number of an element when (i) an α -particle, (ii) a β -particle, and (iii) γ -radiation is emitted?
Advertisements
उत्तर
- When an α particle is emitted mass number decreases by 4.
- When a β particle is emitted there is no change in the mass number.
- When a γ radiation is emitted there is no change in the mass number.
APPEARS IN
संबंधित प्रश्न
Why is a cathode ray tube evacuated to a low pressure?
State any two precautions to be taken while handling radioactive substances
Give one example of isobars.
What do you mean by Mass number.
A radioactive source emits three types of radiations. Name them.
(i) Name the radiations which are charged.
(ii) Name the radiations which are most penetrating.
(iii) Name the radiations which travel with the speed of light.
(iv) Name the radiations which have the largest mass.
A radioactive substance is oxidized. What changes would you expect to take place in the nature of radioactivity? Explain your answer.
A nucleus is \[\ce{^24_11 Na}\] β-radioactive.
Write the equation represent β-decay.
What is the value of the speed of gamma radiations in air or vacuum?
Mention four properties of Becquerel rays.
Which of the following statements is/are correct?
- α particles are photons
- Penetrating power of γ radiation is very low
- Ionization power is maximum for α rays
- Penetrating power of γ radiation is very high
