the alkali metals
alkali metals
Lithium is in the first period of the periodic table. It is the first element in the alkali metal group.
On the Periodic Table;- Down a column is a GROUP Along a line is a PERIOD .
Helium is in the first period of the periodic table.
This is where the name of the table comes from. A horizontal row of elements is called a period. A vertical column is a group.
The first three periods of the periodic table are called the first period, second period, and third period.
Nitrogen is in period 2 and column 15 of a wide form periodic table.
The column of the periodic table is called group. It is also referred as family.
Each (horizontal) row is called a '''period''', whereas each (vertical) column is called a group.
The horizontal row on the periodic table is called the "period". The vertical column is called the "group".
Alkali Metals
Lithium is in the second period and the first group in the Periodic Table of Mendeleev.