Periods are the __________ and have the same number of _____________.
Groups or families are the ________ and have the same number of __________.
Which is true about the periods (rows) on the Periodic Table?
Most of the elements in the Periodic Table are ____________.
Most elements in the Periodic Table are _____________ at room temperature.
Which is true about the groups (columns) on the Periodic Table?
Valence electrons are ...
Metals usually ___________ electrons.
If an atom gains electrons it becomes ___________.
If an atom loses electrons, it becomes ____________.
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