Groups! They all have same number of valence electrons in outer shell, which leads to similar chemical and physical characteristics.
columns
periods are the rows and families are the columns
periodic table
The columns are known as groups.
they are called groups or families
colums are called "families" or "groups". They are all placed in order according to the atomic number, and valend electrons
they are called groups or families
COLUMNS columns
All elements a given column have the same number of valence electrons.
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 elements in the same vertical columns, also called groups or families, all share common traits with each other (for example, all of the alkali metals react violently when placed in water.) This is because all of the elements in one group contain the same number of valence electrons.
periodic table
The columns are called groups (or, sometimes, families). The rows are called periods.
Columns in a Periodic Table are called groups.They represent elements with similar characteristic. All the elements in a group has same number of valence electron.