i need some help for a sic porjet
2006-10-11 02:36:19 · 5 answers · asked by ashsands1 2 in Science & Mathematics ➔ Chemistry
The atomic weight of an element is the number of protons added to the number of neutrons
2006-10-11 02:42:59 · answer #1 · answered by » mickdotcom « 5 · 0⤊ 0⤋
It depends on what atom. Protons and neutrons, collectively called nucleons, are close in mass to each other, and their combined number is the atomic mass. Each nucleon has a mass of 1.67 x 10^−27 kg, and the atomic masses can range from 1 (hydrogen, a single proton) to 292 (ununhexium) and beyond. In determining mass, electrons are negligible because they are so much less massive than nucleons. Just multiply the atomic mass by the mass value given earlier to find the atom's actual mass in SI units.
2006-10-11 03:53:45 · answer #2 · answered by jalanankur 1 · 0⤊ 0⤋
An atom is very light. It is the smallest existing particle in nature and it is said that its weight is almost negligible.
the proton has a mass of 1unit
the neutron has a mass of 1 unit
the electron has a mass of 1/1840 units
Add these to get the total mass of the atom, which is quite small.
2006-10-11 13:53:18 · answer #3 · answered by J D 3 · 0⤊ 0⤋
that would depend on the number of protons, neutrons and electrons that make up the atom. the atomic weight of every element (or atom) is given on the periodic table.
2006-10-11 02:39:29 · answer #4 · answered by yonitan 4 · 0⤊ 0⤋
it is unable to say
2006-10-11 02:50:07 · answer #5 · answered by Anonymous · 0⤊ 0⤋