Periodic Table IMPORTANT Flashcards

1
Q

How many periods does the Periodic Table have?

A

7

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2
Q

How many groups (families) are in the Periodic Table?

A

18

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3
Q

Who is credited with the creation of the Periodic Table?

A

Dmitri Mandaleev

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4
Q

Elements in the same period have the ____________

A

same number of electron orbitals

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