Atomic weight is neutrons plus protons. If the atomic weight is 197, we subtract the number of protons which we know is 79 because that's what makes it gold, we get 118.
From the chart on the related link: 197Au is the most common, and should be pretty close to 100%, since the longest half-life of any of the others is 186 days.
The isotope gold-197 has 118 neutrons.
Helium has two protons and two neutrons (and two electrons).
For each isotope of bohrium the number of neutrons is different. Number of neutrons = Mass number of an isotope of Bh – 107
The isotope barium-140 has 84 neutrons.
Meitnerium has 109 protons and electrons.For each isotope of Mt the number of neutrons is different. Number of neutrons = Mass number of an Mt isotope - 109
The atomic number of uranium is 92. The number of neutrons of the isotope uranium-235 is 143.
146 neutrons.
Silicon has 14 protons, so it typically has 14 neutrons as well to maintain a stable atomic structure.
In the most common isotope of silicon, there are 14 neutrons.
A neutral germanium atom typically has 32 neutrons. This can be calculated by subtracting the atomic number of germanium (which is 32) from its atomic mass (which is usually around 72).
Number of neutrons = Mass number of an isotope - 93The most common isotope has 144 neutrons.
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Gold has 79 electrons and protons, and 118 neutrons (in the isotope 197Au); other isotopes of gold have different numbers of neutrons.
The most common isotope , berkelium-249, has 152 neutrons.Number of neutrons = Mass number of an isotope - 97
A gold atom typically has 79 protons, 118 neutrons, and 79 electrons.
The number of neutrons in an atom of mercury depends on the isotope. The most common mercury isotope has 122. The average number of neutrons in an atom of mercury is about 120.
The most common isotope , berkelium-249, has 152 neutrons.Number of neutrons = Mass number of an isotope - 97
6 protons. The number of neutrons varies, but the most common isotope has 6 neutrons.