Thursday, February 6, 2014

How to find number of neutrons

How many neutrons does an atom have?
Atomic mass of the atom - atomic# of the atom.
Examples:
Neutrons of Zn = 65 - 30 = 35.
Neutrons of O2- = 16 - 8 = 8.
Neutrons of Y3+ = 89 - 39 = 50.

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