It is not an exception: it is at the top of group 18, the noble gases which is exactly where it should be.
helium is in the family of noble gases according to the periodic table
22
22
cavca
first!
Metalloids are placed in a zig-zag pattern in periodic table. They are to the left of non-metals.
Boron is located in Group 13 (formerly Group IIIA) and Period 2 of the periodic table. It has an atomic number of 5.
They use a Periodic Table.
Helium is in the family of the noble gases. If your looking for something different (because i know i am) family can also mean sort of elements related or next to your atom your researching on the periodic table.
The element's location on the periodic table indicates its period, which corresponds to the number of electron shells in its atomic structure.
Period 1 Group 0
group 14, period 2