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There are 7 periods. These describe number of shells.

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10y ago

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Where is the period number found on the periodic chart of the elemnts?

Usually at the top ... and classically written in Roman numerals.Yes, there are numbers at the top of a periodic table, although they are for the groups/families on the periodic table. Usually the period numbers are found to the left of the periodic table.


What does the numbers on the side of the periodic table represent?

The period to which the element belongs


What period in the periodic table is copper?

Copper is located in period 4 of the periodic table.


What period is helium in in the periodic table?

Helium is in the first period of the periodic table.


Is xenon in the first period of the periodic table?

No. Xenon is not the first period of the periodic table. It is placed in the 5th period of periodic table.


What period is argon in?

Argon is in the third period of the modern periodic table.


What period of the periodic table is oxygen in?

Oxygen is in Period 2 , Group 16 ( VI A) of periodic table


What is the number on the periodic table for sodium?

The atomic number of sodium is 11. Other numbers are 3rd period and column 1.


What period is cesium on the periodic table?

Caesium is a Period 6 element.


Is the Iodine in period 2 of the periodic table?

No , Iodine is placed in period-5 of the periodic table.


What period on the periodic table does sulfur belong?

Sulfur (S, element number 16) is on the third period of the periodic table.


In the periodic table what is a period?

A period on the periodic table is a row.This is the horizontal section of the periodic table.