Answer:
Each row is called a period. Each column is called a group or family.
Explanation:
H2O is the chemical formula of water. It means that each molecule of water is made up of two hydrogen atoms, indicated by the letter H, and a single oxygen atom, represented by the O. Water is a chemical substance with no smell, taste, or color.
B I think is right. Hope this helps!
Answer:
it can cause irritation in eyes throat and lungs and u can become lightheaded, or possibly fall in a coma
