Gold (Au) has a mass of 196.96655 amu.
Actually the mass number if gold is dependent on the number of neutrons in the mix. Gold has 79 protons and the isotope that gold is at the time will determine the mass number. So, mass number = # of protons + # of neutrons...this is for any element.
The mass number of Gold is 197.
197
The only stable, and only naturally-occurring isotope of gold has mass number of 197. This is the number of protons and neutrons in each nucleus. Gold's atomic number is 79. This is the number of protons found in each gold atom. This determines its place in the periodic table, and its chemical properties: it is the defining property of gold. A nucleus with a different number of neutrons and the same 79 protons would be a different isotope with a different mass number; a nucleus with a different number of protons would not be gold, but some other element.
Atomic mass is the number of protons plus the number of neutrons so, in the case of gold, the mass number = 79+118 which is 197
For real
The mass number of Gold is 197.
197
The mass number for Gold(Au) is 196.967
The only stable, and only naturally-occurring isotope of gold has mass number of 197. This is the number of protons and neutrons in each nucleus. Gold's atomic number is 79. This is the number of protons found in each gold atom. This determines its place in the periodic table, and its chemical properties: it is the defining property of gold. A nucleus with a different number of neutrons and the same 79 protons would be a different isotope with a different mass number; a nucleus with a different number of protons would not be gold, but some other element.
Atomic mass is the number of protons plus the number of neutrons so, in the case of gold, the mass number = 79+118 which is 197
Gold is a metal element. Atomic mass of it is 197.
Gold is a metal element. Atomic mass of it is 197.
40.078
Gold is a metal element. Atomic mass of it is 197.
Gold has 79 electrons and protons; the number of neutrons is specific for each isotope. Number of neutrons in a gold isotope = Mass number - 79
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Francium is a non metal element. Atomic mass of it is 223.