As you move across the Periodic Table from left to right, the elements within a given row have their electrons in the same energy level (given by the number of the row they are in). They way they differ is by the number of electrons. Moving from left to right, the number of electrons increase.
The relationship is that the elements are organized by periods. Each row is a period and it goes from left to right. Each row is a period identified by different colors. Elements on the same row have something in common. All of the elements in a period have the same number of atomic orbitals. For example all the elements on the 1st row have only one orbital for its electrons. All the elements on the 2nd period (row) have two orbitals for its electrons. This repeats to period (row) 7. - Brian Tui
the period
litium, and elements in the 2nd period (row) are pretty common
They have different numbers of valence electrons.
A period is a row of elements on the periodic table.
They have different numbers of valence electrons.
They have different numbers of valance electrons
All are different. Each element has its own row and column that it fits into.
They have different numbers of valance electrons
The relationship is that the elements are organized by periods. Each row is a period and it goes from left to right. Each row is a period identified by different colors. Elements on the same row have something in common. All of the elements in a period have the same number of atomic orbitals. For example all the elements on the 1st row have only one orbital for its electrons. All the elements on the 2nd period (row) have two orbitals for its electrons. This repeats to period (row) 7. - Brian Tui
the period
A period is a row of elements
wth
Elements in the first row of the rare earth elements of the Periodic Table are called LANTHANIDES.
litium, and elements in the 2nd period (row) are pretty common
This row of chemical elements is a "period".
The answer to that is column.