Period-1 represents elements of the sun. This period constitutes hydrogen and helium.
Two elements
A period is the horizontal row on the Periodic Table of the Elements.
hydrogen and helium
A period is a row in the periodic table of elements.
A period is the horizontal row on the Periodic Table of the Elements
The number of each period in the modern periodic table represents the number of shells. There are 7 periods in periodic table.
A period is a row of elements on the periodic table.
Two elements
There are 32 elements in the 6th period of the periodic table.
A period is the horizontal row on the Periodic Table of the Elements.
hydrogen and helium
An elements period is its row in the Periodic Table.
An elements period is its row in the Periodic Table.
There are 8 elements in the third period of periodic table. The elements belong to group-1,2,13,14,15,16,17 and 18
A period is a row in the periodic table of elements.
A period is the horizontal row on the Periodic Table of the Elements
a family is a column of elements a period is a row of elements