What y'all think of him cuz me he fine ​

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

What are the three major branches of natural science? • earth and space science, life science, physical science •earth and space science, physical science, chemistry •physical science, life science, chemistry •life science, chemistry, physics

Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.