The rows (Horizontal) are called Periods and the Columms (Vertical) are called Groups.
In the periodic table chemical elements are orderd in periods and groups.
In the modern day periodic table, the periodic table gets wider in periods two, four, and six.
groups
The horizontal lines are called "periods" and show how many "shells" each atom hasThe horizontal rows in the periodic table are called periods. The vertical columns are called groups.
The periodic table has 7 periods on it.
The modern periodic table has seven periods.
there are 7 periods in the periodic table118
there are 7 periods in the periodic table118
Horizontal rows are termed as periods. There are 7 periods in periodic table.
There are 7 periods in the modern periodic table.
Periods are the horizontal rows in the periodic table of Mendeleev; this table contain 7 periods.
There are 7 periods in the modern periodic table.
The rows of the periodic table are known as periods.
7 periods and 18 groups are there on the modern periodic table.
7The Periodic Table has 7 periods and 18 groups.
The rows in the periodic table are called periods. There are 7 periods in periodic table.