Multiple Choice
In the periodic table, Group 17 elements are the halogens. Which element is the most reactive (most active) halogen?
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4. Atoms and Elements
Periodic Table: Group Names
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In the periodic table, the vertical columns are known as what?
A
Isotopes
B
Groups (also called families)
C
Orbitals
D
Periods
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Periodic Table: Group Names practice set
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