It is an old name, a synonym; groups of elemetes were compared with a family.
On the periodic table, the elements fall into groups (the vertical columns) which are often called families. The reason is that elements in a group are chemically similar to each other.
A group is often called a chemical family.
A group of people in a church is called the congregation. They may also be divided into a dioceses or council, depending on the order to which they belong. The congregation often calls themselves the Church Family.
A group of people is often called a "crowd" or a "gathering."
A family of rabbits is called a fluffle in Britain and in the Us they are called a herd. a Hutch is the house/cage they live in.
Lithium on the periodic table is found in the first group or family and the second period. The first family is often called the alkali metal family.
One element of carbon family as Silicon or Germanium and one element from Boron family as gallium or Indium or one element from Nitrogen family as Arsenic.
A group of people in a church is called the congregation. They may also be divided into a dioceses or council, depending on the order to which they belong. The congregation often calls themselves the Church Family.
A group of voles is often called a colony or a nest.
A large group of fishes is often called a school.
A group of advisers, usually for a nation's leader, is often called a(n):
It's often referred to as white gold.