The horizontal rows are named 'PERIODS'.
The vertical columns are named 'GROUPS'.
The rows (Horizontal) are called Periods and the Columms (Vertical) are called Groups.
number of protons
Arranging the Periodic Table by atomic number rather than Atomic Mass was first suggested by a British man named Henry Moseley in 1913. Before that point, the periodic table was organized by atomic mass, and has several inconsistencies and problems.
It is called the Periodic Table of Elements.
Mendeleev invented the legendary periodic table and their is a university and chemical element named after him.
periods
The Horizontal Rows are named 'PERIODS'. The Vertical Columns are named 'GROUPS'.
These rows are named periods.
Yes. the horizontal rows on the periodic table are called periods.
They are the horizontal rows in the periodic table
A horizontal row on the periodic table of elements is called a period.
The rows (Horizontal) are called Periods and the Columms (Vertical) are called Groups.
The horizontal rows are periods on periodic table. There are 7 horizontal rows in modern periodic table.
The horizontal rows are referred as periods. There are 7 periods in periodic table.
Horizontal rows in Periodic Table are called Periods
The horizontal sections of the periodic table are called periods.
The Horizontal row on the table is called a period