Chemistry, 25.11.2021 14:40 Leonardo8366

What two things do you notice about elements in the same period? They have the same number of valence electrons and one more energy shell as you go across the period.
1.They have the same number of energy shells and one more valence 2.electron as you go across the period.
3.They have the same number of energy shells and the same number of valence electrons.
4.They have the same number of neutrons and electrons

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What two things do you notice about elements in the same period? They have the same number of vale...

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