Periods are placed horizontally in the periodic table of Mendeleev.
The rows in the periodic table are called periods. There are 7 periods in periodic table.
Periods have same shells. There are 7 periods in periodic table.
rows. the vertical columns are called periods
Rows in the Periodic Table are called Periods.There are 7 periods in total.All the elements in period have same number of energy levels.
Horizontal rows are called periods. There are 7 periods in periodic table.
Periods on the periodic table are the horizontal rows that go from left to right.
Periods on the periodic table are the horizontal rows running from left to right. There are 7 periods in total on the periodic table. Each period represents the principle energy level of the elements.
The rows in the periodic table are called periods. There are 7 periods in periodic table.
The horizontal rows in the periodic table are known as periods. There are seven periods in the periodic table, each representing a different energy level or shell in which the elements' electrons are located.
Periods have same shells. There are 7 periods in periodic table.
The periodic table has 7 periods on it.
rows. the vertical columns are called periods
The horizontal rows on the periodic table are periods.
The modern periodic table has seven periods.
Rare earth metals are located in the lanthanide series of the periodic table, which is a group of elements in the sixth and seventh periods.
Rows in the Periodic Table are called Periods.There are 7 periods in total.All the elements in period have same number of energy levels.
Periods are horizontal rows. 7 periods are present in modern periodic table.