The Atomic Mass is approximately the sum of the number of protons and neutrons.
Chat with our AI personalities
12. The number 12 refers to the atomic mass. More precisely, to the sum of neutrons + protons; but this is usually close to the atomic mass. In the case of carbon-12, it is exact, by definition.
We can find atomic mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.
We can find Atomic Mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.
The number 174 in platinum refers to mass number or A. This is applicable to atomic nuclei of Pt 174 isotope.
The atomic mass number of iodine is 17.8923