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Periodic-table

QuestionAnswer
What is the weight of an element? Average atomic mass
What is atomic number? Number of proton
Does atomic number change? No, never
What do we call a vertical column of the periodic table? Group or Family
How many groups are there in a standard periodic table? 18
Characteristics of each group Each group has similar chemical and physical properties. Each group has same numbers of valence electron.
What do we call each row in the periodic table? Period
Created by: 1442650439