PYQ NEET- The Atomic Nucleus Fission And Radioactivity

2014: The half-life of a radioactive isotope is the time required for the amount of the isotope to reduce to half of its original value. In this case, the half-life is 30 days. This means that after 30 days, the amount of the isotope will be 1 / 2 of its original value. After another 30 days, the amount of the isotope will be 1 / 4 of its original value. Therefore, it will take 60 days for 3⁄4th of the original amount of the isotope to disintegrate.

2015: The mass number of a nucleus is the total number of protons and neutrons in the nucleus. The atomic number is the number of protons in the nucleus. The number of neutrons in the nucleus is equal to the mass number minus the atomic number. In this case, the mass number is A and the atomic number is Z. Therefore, the number of neutrons in the nucleus is A - Z.

2016: The radius of a nucleus is proportional to the cube root of the mass number. This is because the radius of a nucleus is determined by the number of protons and neutrons in the nucleus, and