Chemistry, 10.03.2020 20:29 HarryPotter10

Which answer choice correctly describe a trend of valence electrons in the periodic table?

Select all that apply.

Elements in the same group have the same number of valence electrons.
When moving right across a period, the valence electrons of the main group elements increase by one.
When moving down a group, the valence electrons of the main group elements increase by one.
Elements in the same period have the same number of valence electrons.

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Which answer choice correctly describe a trend of valence electrons in the periodic table?

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