What does Group number tells you about the atoms in that Group? a. similarity of properties for the elements in this Group b. number of valence electrons c. all answers are correct d. the maximum number of electrons atoms in this Group can accept or give away QUESTION 2 What does a period number tell you about the elements in that period? a. number of principal energy levels b. maximum number of electrons atoms can accept or give up c. number of valence electrons What does a period numiser tell you about the elements in that period? a. number of principal energy levels b. maximum number of electrons atoms can accept or give up c. number of valence electrons