The only chemistry term I can think of that would apply is "series of columns". I'm not really a chromatographer, but it's possible that such an arrangement might be useful in some of the more esoteric applications.
If you're talking about architecture, I believe the term is "colonnade".
columns
periods are the rows and families are the columns
The columns are known as groups.
the columns are called groups
There are 18 columns on the periodic table.They are called groups or families.
COLUMNS columns
The vertical columns are called "Groups''The horizontal columns are called "Periods"The vertical columns of the periodic table are known as groups.
These columns are called groups.
columns
periods are the rows and families are the columns
The columns are called groups (or, sometimes, families). The rows are called periods.
The columns are known as groups.
Slim and graceful columns are most known as Ionic columns.
the columns are called groups
The columns can be called either groups or families.
Columns in the periodic table are called "groups" and there are 18 groups in the periodic table.
The vertical columns of the periodic table are called groups or families.