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1.The repeating pattern of the properties of elements from row to row in the periodic table is an example of ___________ 2. An element that appears in Group 18 of the periodic table is called a(n) __________
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1.The repeating pattern of the properties of elements from row to row in the periodic table is an example of ___________

2. An element that appears in Group 18 of the periodic table is called a(n) __________

User Allkenang
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1. Periodicity (the repetition of several properties in a row on the Periodic Table)

2. Noble Gas (Noble gases are located in group 18 on the Periodic Table)
User Zxt
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