How Many Periods are in the Periodic Table

How Many Periods are in the Periodic Table

• How Many Periods are in the Periodic Table

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  • Each horizontal row of elements in the Periodic Table is known as a period.
  • The Periodic Table consists of seven periods, from Period 1 to Period 7.
  • When going across Period 2 and Period 3 from left to right
    • the proton number increases by one from one element to the next
    • the number of valence electrons increases by one from one element to the next.

  

  
  

  

  HOW MANY PERIODS ARE IN THE PERIODIC TABLE