To know the ratio of different atoms present within the compound where we have to look at

You can look that atoms in a form of liquid as you can't see the atoms

Explanation:

You will have to open that books where the ratio is written.And secondly you will go to the chemical store and buy which atoms which you want to look then you can see it

Explanation: to know the ratio of 2 different atoms present within the compound where we have to look at.

s too much pool water may lead to chlorine poisoning. the concentration of chlorine in public drinking water is extremely low and not harmful to human health. sooo yeahh

explanation:

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.