Helium, Xenon, Neon, Krypton, and Radon.
B, Al, Ga, In, Tl are the members of the Boron family.
Do you mean as in the periodic table of elements? Do you mean in the family of precious metals? the table
All of the members of the carbon family have 4 valence electrons.
Halogen family members, or elements in group 17, have 7 valence electrons.
The elements under the scandium family are as follows: ► scandium ► yttrium ► lanthanum ► actinium
Chlorine, Fluorine, Bromine, Iodine and Astatine are members of the Halogen family.
Ar
Argon is a non metal element. Atomic mass of it is 39.94.
Sulphur, selenium, tellurium, polonium and Uuh are other members of oxygen family.
It is 87.3 K.
There are three natural isotopes.
Because the members of a group have the same number of valence electrons.