Atomic structure:
The development of atomic structure is said to have begun when John Dalton introduced the Atomic Theory
Dalton's Atomic Theory states that atoms are the smallest particles and there are three subatomic particles that make up an atom, namely protons, neutrons, and electrons
Subatomic particles
Features
Proton
Positively charged
Inside the atomic nucleus
Neutron
Not charged (neutral)
Electron
Negatively charged
Ion formation:
Ions are formed when atoms lose (positive ions) or receive electrons (negative ions)
Positive ions are formed when atoms lose electrons. So a positive ion has more protons than its number of electrons
Negative ions are formed when atoms receive electrons. Thus, a negative ion has more electrons than its number of protons
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