How do the number of valence electrons differ across a period?
1 Answer
Jun 15, 2017
The number of valence electrons increases sequentially.......
Explanation:
The number of valence electrons increases sequentially.......across the Periodic Table, from left to right as we face the Table.
And take the first Period; hydrogen has ONE valence electron; and helium has TWO valence electrons. And clearly the number of valence electrons influences the reactivity of the element.
And start a new Period, lithium (