What type of element is Sodium?
What is a horizontal row on the periodic table called?
On the periodic table, a vertical column is called a
The alkali metals are located in
The alkaline earth metals are located in
The noble gases are located in
The halogens are located in
Isotopes are atoms of the same element that have different numbers of
Metals * electrons and form *.
When electrons are lost, a * charge forms and the atom is called a(n) *
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