period 1, group 18
Helium is in the first period of the periodic table.
helium is in row 1 (or better period 1)
Helium
Helium is under group 18 and period 1. This makes helium a noble gas with the most electrons it can possibly have under stable conditions.
He, helium
group 18, period 1
Period 1 Group 0
1
The first period
Helium is in the first period of the periodic table.
period 1, group 18
heliums period address is 11.09
Helium is in the first period of the periodic table.
helium is in row 1 (or better period 1)
Helium is a period 1 element.
Helium
Helium is under group 18 and period 1. This makes helium a noble gas with the most electrons it can possibly have under stable conditions.