Because noble gases are in the last column
The last element in each period is a noble element. It is non-reactive.
period
each row in the Periodic Table is called a period.
each row in the Periodic Table is called a period.
its called a period.
The last element in each period is a noble element. It is non-reactive.
At the end of each period is a noble element. It is non-reactive.
The number of each period in the modern periodic table represents the number of shells. There are 7 periods in periodic table.
a period
Period.
period
each row in the Periodic Table is called a period.
Period
each row in the Periodic Table is called a period.
its called a period.
filled. That would be 2 electrons for helium, and 8 electrons for the rest of the noble gases in group 18 on the periodic table.
They will be in the same group (for example the halogens and noble gases). Look at the periodic table.