7. complete the statement by circling the word that makes the statement true: a. as go down the columns…

7. complete the statement by circling the word that makes the statement true: a. as go down the columns (periods), the number of energy levels, or shells, increases / decreases . b. as you move across from right to left, the number of electrons in an atoms outer most shell increases / decreases .

7. complete the statement by circling the word that makes the statement true: a. as go down the columns (periods), the number of energy levels, or shells, increases / decreases . b. as you move across from right to left, the number of electrons in an atoms outer most shell increases / decreases .

Answer

Brief Explanations:

a. In the periodic table, as you go down the columns (groups), new energy levels are added, so the number of energy levels increases. b. As you move from right - to - left across a period, the atomic number decreases and the number of valence electrons decreases.

Answer:

a. Increases b. Decreases