Periodic Trends Answers

Use the periodic table to answer the following questions.How many valence electrons does magnesium have? ⇒ 2

Type in the correct values to correctly represent the valence electron configuration of magnesium: AsB A =

B =

What is the charge of an oxygen ion? -

What is the charge of a magnesium ion? +

Use the periodic table to answer the following questions.How many valence electrons does oxygen have?

Type in the correct values to correctly represent the valence electron configuration of oxygen: AsB2pC A =

Describe the trends in electron configuration in the periodic table by selecting the terms from the drop-down menus.The number of valence electrons from the left to right across a period.

The number of valence electrons from the top to the bottom of a group.

B =

Electrons are added into the outermost in Groups 1 and 2.

C =

Electrons are added in the outermost in Groups 3 through 12.

Electrons are added in the outermost in Groups 13 through 18.