Asked by Anonymous

Elements with similar properties
Answer occupy the same period of the periodic table
have similar electron configurations
have the same number of neutrons in their nuclei
exist in the same physical state (solid, liquid, or gas)
Answered by DrBob222
I think you mean occupy the same GROUP. Periods are the rows, columns are groups.
Yes they have similar electron configurations.
I don't believe the last two are true.
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