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The movement of an electron from a higher energy level to a lower energy level in an atom, a photon is emitted.
What is photon?
Photon can be defined as those particles in a quantum of light. It is also defined as a particle of light.
However, Photons are usually emitted or released when electrons moved from a higher energy level to a lower energy level.
What is an atom?
An atom is the smallest particles of an element which can take part in a chemical reaction.
- Some substances are monoatomic consisting of only one atom
- Some are diatomic consisting of two atoms, Example: Oxygen atoms ( O2 ), Hydrogen atoms ( H2 )
- Some atoms such as Ozone ( O3 ) are triatomic consisting of three atoms.
- Some are polyatomic
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