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.
carbon (group 14, period 2) hydrogen (group 1, period 1) nitrogen (group 15, period 2) oxygen (group 16, period 2) sulphur (group 16, period 3) halogens (group 17, period 2-5)
Group number 12, period number 4 Transition metal
Calcium is present in period 4. its group no. is 2
Oxygen belongs to group 16 (also known as Group VIA) and period 2 on the periodic table.
the group is 18
Carbon is in group 14, period 2
Nitrogen is period 2, group 15. sodium is period 3 group 1, iodine is period5 group 17. mercury is period 6 group 12.
nitrogen- group 15; period 2 sodium- group 1; period 3 iodine- group 17; period 5 mercury- group 12; period 6
Sodium is in Group 1 and Period 3 of the periodic table.
carbon (group 14, period 2) hydrogen (group 1, period 1) nitrogen (group 15, period 2) oxygen (group 16, period 2) sulphur (group 16, period 3) halogens (group 17, period 2-5)
Germanium is in period 4 and group 4A or 14.
Period 4 Group 8
6th group 3rd period
Argon is in Group 18 (Noble Gases) and Period 3 on the periodic table.
Xenon is in Group 18 (Noble Gases) and Period 5 of the periodic table.
Group number 12, period number 4 Transition metal
Xenon is a noble gas. It belongs to group 18 and period 5.