2007-01-08 07:47:34 · 6 answers · asked by frickenawesomekoreanandyouknowit 2 in Science & Mathematics ➔ Chemistry
Atomic number tells you the number of protons (positive charges), so you have 79 protons. If there is no charge on the atom, than the number of electrons (negative charges) equals the number of protons so there are 79 electrons as well. To calculate the number of neutrons (no charge), you need to subtract the number of protons from the atomic weight 197-79 = 118 neutrons.
2007-01-08 07:52:02 · answer #1 · answered by Poopdedo 1 · 0⤊ 0⤋
Atomic weight is the number of protons plus the number of neutrons. So in this case, you would subtract the atomic number (which equals the amount of protons) from atomic weight. 197-79=118.
2007-01-08 16:02:25 · answer #2 · answered by Elwood P. Dowd 2 · 0⤊ 0⤋
The number of neutrons is simple the atomic weight minus the atomic number.
so 197-79 is 118 neutrons.
2007-01-08 15:49:20 · answer #3 · answered by Sam L 2 · 0⤊ 0⤋
Mass number - atomic number = number of neutrons
197-79=___
2007-01-08 15:49:19 · answer #4 · answered by hcbiochem 7 · 0⤊ 0⤋
118
2007-01-08 16:13:00 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Is there in fact such a species of gold? Gold is usually 196.
2007-01-08 15:55:33 · answer #6 · answered by Carol L 1 · 0⤊ 0⤋