When moving across a period from left to right in the periodic table (excluding transition elements) which trend occurs?(1 point)ResponsesValence electrons decrease by one.Valence electrons decrease by one.Valence electrons increase by one.Valence electrons increase by one.The energy levels decrease by one.The energy levels decrease by one.The energy levels increase by one.The energy levels increase by one.
1 answer
The trend that occurs when moving across a period from left to right in the periodic table (excluding transition elements) is that the number of valence electrons increases by one.