what is the number of protons and neutrons in the element gold

Chemistry
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what is the mass number?

Sep 26th, 2015

Thank you for the opportunity to help you with your question!

protons=79

electrons=79

mass number=79

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Sep 26th, 2015

how do you get the mass number?

Sep 26th, 2015

in this case the mass number(also known as the atomic number) is equal to the number of protons and electrons in the element of gold,thus we have 79 protons,and 79 electrons,hence the mass number is 79.

Please let me know if you need any clarification. I'm always happy to answer your questions

Sep 26th, 2015

Mass Number

The mass number of an atom is the sum of the protons and neutrons in the nucleus of the atom.

The Mass Number for the gold atom   is 79 P + 118 N = 197


Sep 26th, 2015

consider this answer for mass number,

Mass Number

The mass number of an atom is the sum of the protons and neutrons in the nucleus of the atom.

The Mass Number for the gold atom  is 79 P + 118 N = 197


Sep 26th, 2015

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