10 points
3. What is the total number of subatomic particles for an atom of Lithium
with an atomic mass of 7?
O
10
8

Hey there!

Lithium has 3 protons.

Assuming this is a neutral atom, that means it will also have 3 electrons.

Atomic mass is the sum of protons and neutrons. We have 7 total protons and neutrons, and 3 electrons.

7 + 3 = 10

The total number of subatomic particles is 10.

Hope this helps!  

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.