The History and Arrangement of the Periodic Table Answers

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

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.