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Why do Atoms combine? (number of electrons (The first energy level can…
Why do Atoms combine?
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Element Structure
Each element has a different atomic structure consisting of a specific number of protons, neutrons, and electrons.
In a lithium atom, has three protons and four neutrons in its nucleus, and three electrons moving around the nucleus.
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Halogens
Elements in group 17
Fluorine is the most reactive of the halogens because its outer energy level is closest to the nucleus
Energy steps
a model that shows the maximum number of electrons each energy level can hold in the electron cloud.
Electrons within an atom have different amounts of energy, represented by energy levels. These energy levels are represented by the stairsteps