Atomic Number, Atomic Weight, Formula Weight Flashcards
1
Q
ion
A
an atom or molecule that has lost or gained electrons and therefore has a charge.
2
Q
Charge
A
Charge= # of protons - # of electrons
3
Q
label
A
4
Q
How many protons does oxygen have?
A
Oxygen has 8 electrons.
5
Q
What is the formula mass of O2?
A
O2 has a formula mass of 2x15.999 = 31.998 u
6
Q
What is the mass of one mole of O2?
A
2x15.999 = 31.998 grams
