Helium is part of a group called the Noble Gases. This group is made up of six different gases, their names are: Helium (H), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn).
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)
Helium has 2 valence electrons. Being in Group 18 of the periodic table, helium is a noble gas and has a full outer electron shell.
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.
heliums period address is 11.09
The Heliums period is a explosive force of matter which produces nano bits of helium. The shockwave contributes to events here on Earth. Scientists are still trying to decode the main details.
It is not an exception: it is at the top of group 18, the noble gases which is exactly where it should be.
liquid, and gas.
Helium is an odorless gas.
gaseous state.
Helium's chemical symbol is He.
-268.93 °C
helium is a colourless odourless gas
1
Carbon is in group 14, period 2
Helium is a gas at room temperature.