Physics, 27.10.2020 21:10 anglacx5465

Which of the following groups have one valence electron and are very reactive A-column 1 alkali metals
B-Column 2 alkaline earth metals
C-column 17 halogens
D-column 18 noble gases

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Which of the following groups have one valence electron and are very reactive A-column 1 alkali met...

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