2006-10-05 05:27:53 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Atomic mass is the mass of a atom in rest.
Atomic number is the number of protons found in nucleous of atom.
So, the difference is that first concept refers to the mass of an atom and the last one refers to the constitution (and identity) of the atom.
2006-10-05 05:32:57 · answer #1 · answered by CHESSLARUS 7 · 3⤊ 0⤋
Mass And Atomic Number
2016-11-11 05:36:51 · answer #2 · answered by ? 4 · 0⤊ 0⤋
The atomic number is the number of protons in the nucleus; this determines the element of the atom (eg, iron vs carbon).
The atomic mass roughly corresponds to the number of protons and neutrons together, although the exact mass is a bit different because some of the mass is in the bonds between the particles.
2006-10-05 05:32:46 · answer #3 · answered by Joris 2 · 0⤊ 0⤋
Look on the periodic table. See those little numbers sub- and super-scripted next to the symbols? The one at the top is the atomic mass - it's the mass of the whole atom, electron, neutron and proton. The number at the bottom is the atomic number, the number of protons in the atom.
2006-10-05 05:37:29 · answer #4 · answered by DEMO 1 · 0⤊ 0⤋
Atomic # is the number of protons in the nucleus (also the # of electrons in the shells). Carbon has an atomic # of 6. There are 6 protons in the nucleus & 6 electrons in the shells.
Atomic mass is the weight of an atom & is equal to the number of protons & the number of neutrons in the nucleous.
Carbon has 6 protons & 6 neutrons for an atomic weight of 12.
2006-10-08 13:24:26 · answer #5 · answered by yupchagee 7 · 2⤊ 0⤋
Atomic number is the number of protons in an element. Atomic mass is the number of protons, electrons and neutrons in an element. Mass is like the weight of the element.
2006-10-05 05:37:58 · answer #6 · answered by Great Nurse 2 · 0⤊ 0⤋
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-- Atomic number is the proton number. The number of protons in the nucleus only. Thus, it is always the smaller of the two numbers. -- Mass number is the total number of nucleons in the nucleus (the number of protons + neutrons). This will be the bigger of the two numbers always. -- Relative atomic mass you can consider to be the same as mass number. It is defined as "the weighted average mass of an element, relative to 1/12th the mass of an atom of carbon-12, taking into account naturally occurring isotopes". However, all mass numbers are worked out relative to carbon, so you can consider mass number and relative atomic mass the same thing. I got A* in my GCSE Chemistry and am hoping for an A in my AS. If you need any help, feel free to message me.
2016-04-08 17:22:46 · answer #7 · answered by ? 4 · 1⤊ 0⤋
The atomic number represents the unit of protons in the neucleus of an element. The atomic mass is the weight of the element.
2006-10-05 05:30:31 · answer #8 · answered by WC 7 · 0⤊ 0⤋
atomic # is the sum of protons and neutrons in the nucleus
atomic mass is the actual mass of one mole of atoms, based on the mass of C-12, or something like that
2006-10-05 05:31:56 · answer #9 · answered by bequalming 5 · 0⤊ 0⤋