Question

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material

Answer 1

Answer:

1.  Daughter element : the new element produced along with a decay particle in a nuclear transmutation

2. half life: the time required for the decay of one-half of the atoms in a sample of radioactive material

3. parent element : the substance that decays in a nuclear transmutation

4.  transmutation :  the change of one chemical element into another by nuclear decay or radioactive bombardment

Explanation: Radioactive decay process is a type of process in which a less stable nuclei also called as parent element decomposes to a stable nuclei or a daughter element by releasing some radiations or particles like alpha, beta particles or gamma-radiations and the process by which one element changes to another element is called as transmutation.

$_A^Z\textrm{X}\rightarrow _{A-2}^{Z-4}+_2^4\alpha$

Half life is the time taken by an element to decay to half of its initial value.