Periodic Table
How many elements are in the 2nd period?
8
How do you figure out the number of neutrons?
Subtract the atomic number from the mass number
Elements in the lower left are known as?
metals
How do you find an element's mass number?
Add the number of neutrons and the number of protons together
Elements that have a B in the Group number are known as
Transition elements
Silicon is a
metalloid
What is an electron cloud model?
The electrons around the nucleus spinning so fast it looks like a cloud