Exams › NEET › Physics

After 1α and 2β-emissions

1. mass number reduces by 4
2. mass number reduces by 5
3. mass number reduces by 6
4. mass number increases by 4

Correct answer: mass number reduces by 6

Solution

An alpha (α) particle emission reduces the mass number by 4, and beta (β) emissions do not change the mass number. Thus, after 1α and 2β emissions, the mass number reduces by 4 due to the alpha emission.

Related NEET Physics questions

• Two nuclei have their mass numbers in the ratio of 1 : 3. The ratio of their nuclear densities would be:
• If radius of the 27/13 Al nucleus is taken to be R_Al, then the radius of 125/53 Te nucleus is nearly:
• If the nuclear radius of 27/13 Al is 3.6 Fermi, the approximate nuclear radius of 64/29 Cu in Fermi is:
• The radius of germanium (Ge) nuclide is measured to be twice the radius of 9/4 Be. The number of nucleons in Ge are:
• If the nucleus 27/13 Al has nuclear radius of about 3.6 fm, then 125/32 Te would have its radius approximately as:
• The nuclei of which one of the following pairs of nuclei are isobars?

⚔️ Practice NEET Physics free + battle 1v1 →