Periodic Table
What a atomic number
The number that tells you how many protons are in the nucleus and determines the chemical properties of the element
What is a period?
What is a group?
period=the rows that go side to side
Group= The column that goes up and down
How do you know how many neutrons there are in an element
Subtract the number of protons from the atomic mass
How do you determine the mass number of an element
Mass number = protons + neutrons