2 reasons why scientific notation is useful.

Often scientists work with a very large or very small number that contain a lot of zeros. Scientific notation allows these numbers to be written more compactly, and the information is more organized.

Explanation:

The primary reason for converting numbers into scientific notation is to make calculations with unusually large or small numbers less cumbersome. Because zeros are no longer used to set the decimal point, all of the digits in a number in scientific notation are significant, as shown by the following examples.

Explanation:

Smartness

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.