How did knowing the number of valence electrons in one of the alien elements help to identify it? Explain how the table was used to accomplish this task. Write a pharagrah pls first to anserw will get brailest

Why was the campaign in northern africa so important to the outcome of the war?

How was the nation of islam different from other civil rights organizations

Ahistorian has discovered a letter written by an early roman emperor. she translates the letter and discovers that it contains orders to a general before a battle. she works to determine when the letter was written to figure out which battle the letter references.the historian in the passage is most clearly demonstrating which historical thinking skill? a. identifying causes and historical contextb. thinking chronologicallyc. making and evaluating arguments and interpretationsd. analyzing historical sources