When a radioactive isotope releases an alpha particle, the atomic number of the atom is

Thus atomic number of the atom decreases by 2 units.

Explanation: Alpha decay : When a larger nuclei decays into smaller nuclei by releasing alpha particle. In this process, the mass number and atomic number is reduced by 4 and 2 units respectively.

General representation of an element is given as:

where,

Z represents Atomic number

A represents Mass number

X represents the symbol of an element

General representation of alpha decay :

it is important to conserve water because there is very limited amount of freshwater here on earth and if we are not smart about how we use it we will only be runnning out of our supply faster than neccessarry.

answer; /// i do believe that the correct answer is (c)nuclear bond