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There are_ periods included in the periodic table. Answer here SUBMIT s
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There are_
periods included in the periodic table.
Answer here
SUBMIT
s

User Joe Mancuso
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Answer:

7

Step-by-step explanation

There are currently seven complete periods in the periodic table, comprising the 118 known elements. Any new elements will be placed into an eighth period; see extended periodic table.

User Filburt
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