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प्रश्न
A nucleus is \[\ce{^24_11 Na}\] β-radioactive.
Write the equation represent β-decay.
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उत्तर
\[\ce {^24_11 Na -> ^24_12 Mg + ^0_-1 e}\]
संबंधित प्रश्न
What are free electrons?
State any two precautions to be taken while handling radioactive substances
Define the term radioactivity.
State three safety precautions that you would take while handling the radioactive substances.
What are cathode rays? Why are they called ‘cathode rays’? Name a material which exhibits fluorescence when cathode rays fall on it.
How is a zinc sulphide screen affected when a cathode ray beam strikes it?
Name the three main parts of a Cathode Ray Tube.
What do you understand by the term radioactivity?
A certain nucleus has a mass number 20 and atomic number 9. Find the number of neutrons and protons present in it.
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
