2006-12-12 10:23:28 · 4 answers · asked by planner 1 in Science & Mathematics ➔ Chemistry
weight of atom is determined by proton and neutron
there is also e-(s) persent but they are soo light compare to proton and neutron so we dont count that
2006-12-12 10:26:30 · answer #1 · answered by ibrar 4 · 4⤊ 0⤋
Indeed the AMU of an atom is determined by adding the protons (1 AMU) and the neutrons (1 AMU) of that atom.
On the Periodic Table the AMU is given as a decimal. This is because it is the average of the common isotopes of that atom. Some Periodic Tables have different AMU's for the same element on another. This is because they used a different set of atoms to average.
Get an "A"
2006-12-12 21:20:03 · answer #2 · answered by teachr 5 · 1⤊ 0⤋
The number of Protons and Neutrons that make up the nucleus of the atom.
For example: Helium has a molecular weight of 2. It's nucleus is made up of one proton and one neutron.
2006-12-12 18:27:07 · answer #3 · answered by forgiveomatic 2 · 1⤊ 0⤋
the number of protons and neutrons it has - look at the Periodic Table of Elements to see the atomic mass of each element
2006-12-12 18:27:47 · answer #4 · answered by columbia11 2 · 1⤊ 0⤋