ATOMIC , MASS , ELECTRON (NOMOR ATOM, NOMOR MASSA, ELEKTRON)

1. Atomic and Mass

The element is a single substance that can not be down into other simpler substances by ordinary chemical mns. The element can be transformed into other elements through nuclr rction (nuclr). Inside the nucleus are protons and neutrons determines the mass of an atom. The of protons or positive charges contained within the nucleus is shown by the Atomic (NA or Z).For a neutral atom the of positive charge (proton) equals the of negative charges (electrons).

The of total protons and neutrons contained in the nucleus is shown by the Mass (NM or A).Writing an atomic symbol that comes with mass and atomic can be written as follows: Unsur Lambang Unsur Jumlah Proton Nomor atom HiroHelium HHe 12 Z= 1Z=2
Unsur Lambang Unsur Jumlah proton (Z) Jumlah Neutron (N) Nomor MassaA = Z + N Notasi HidroKarbon HC 16 06 112 1H16C12
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