8.2 Modern Periodic table of elements.

What is the chemical symbol for Magnesium?

• M
• Mg
• Ma

What are the vertical columns on the periodic called?

• groups

• periods

• nonmetals

• metals

• metalloids

negative ions occurs when the _____________.

• atom of metal donate electrons.

• atom of non-metal accept electrons.

positive ions form when the ____________.

• atom of metal donate electrons.

• atom of non-metal accept electrons.

duplet electrons arrangement is the stable electrons arrangement is _______ electrons in the first shell.

• 4

• 3

• 2

• 1