Only one valence electron, but not really part of a family., This group is called alkali-metals, This group is called the halogens, Group 3 with ES of (2,8,8,13), This group is called the noble gases, Least reactive metal in group 1, Period 3 element with 7 valence electrons., Period 4 element with 2 valence electrons, Group 7 element with 4 shells , Group 1 element with 5 shells, The most reactive element in group 1, The least reactive element in group 7, Electronic structure of (2,3), Electronic structure of (2, 8, 6) , Electronic structure of (2, 8, 8,14), This group's colours, become darker as you go down the group, Which element will have a higher MP and BP than K.

Gr 8 - Trends in groups of the Periodic Table

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