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Periodic Table - Coggle Diagram
Periodic Table
Representative elements
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Groups 1,2 and 13-18 in the periodic table according to the IUPAC.
A number and a roman numeral is used to divide the elements in groups, representative and transition.
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Alkali Metals
The elements in group 1 (except for hydrogen) are known as alkali metals. Alkali metals are the most reactive.
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Halogens
Elements in group 17 are known as halogens, "salt formers".
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Coinage Metals
Coinage metals, group 11.
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Electron affinity measures the energy difference that is observed when an atom in gas state looses an electron.
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Ionization energy measures how much energy is needed to dissociate an electron from an atom's outer layer. This is when the atom is in gaseous form.