The answer is social classes.
Colunms are named 'Groups'. Rows are named 'Periods'.
The columns are called groups (or, sometimes, families). The rows are called periods.
The columns in the periodic table are called groups or families. These columns contain elements with similar chemical properties due to their shared number of valence electrons.
A group is often called a chemical family.
Groups, 1 through to 8 (or 0) The internet will tell you details about the individual groups. P.S. The rows are called periods
nothing they are just called groups.
Americans with low incomes.
they are called tissues.
Families of elements with similar chemical properties are called "groups" or "families" on the periodic table. Elements within the same group typically have the same number of valence electrons, which gives them similar reactivity and chemical properties.
Classification
Colunms are named 'Groups'. Rows are named 'Periods'.
Groups of similar organisms within a species are called populations. Populations consist of individuals of the same species that can interbreed and share a common geographical location.
stratificatin
A section of an orchestra.
Groups. Elements in the same group have similar electronegativity properties.
People with better than average incomes
They are called families because the elements in a group have similar properties.