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Question
A nucleus `""_11^24Na` emits a beta particle to change into Magnesium (Mg)
(i) Write the symbolic equation for the process.
(ii) What are numbers 24 and 11 called?
(iii) What is the general name of `""_12^24Mg `with respect to `""_11^24Na` ?
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Solution
The `""_11^24Na` nucleus emits a beta particle and changes into Magnesium.
(i) The above process is represented by the equation
`""_11^24Na ->""_12^24Mg + ""_-1^0e`
sodium Magnesium Beta particle
(ii) The number 24 is the mass number of the nucleus and 11 is the atomic number.
(iii) `""_11^24Na `and `""_12^24Mg ` are isobars, i.e., `""_12^24Mg ` is an isobar of `""_11^24Na ` as they have same mass number (protons + neutrons) but different atomic number (protons).
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