A. They have the same number of protons.
B. They have the same number of orbitals.
C. They have the same number of electrons.
D. They have the same number of neutrons.
elements in the same period have the same number of occupied energy levels.
Elements in the same period have the same number of valence electrons.
They have the same number of occupied energy levels
they all have the same amount of outer shells for the atom
Elements of a Period in the Periodic Table have the same number of occupied energy levels (electron shells).
They have similar chemical properties.
The elements in the same period have a number of things in common. In most cases, they have the same chemical and physical properties.
They have the same number of shells / energy levels.
They have the same number of electron shells.
the same number of atomic orbitals
They have the same number of orbitals.
A period is a row of elements on the periodic table.
There are 32 elements in the 6th period of the periodic table.
litium, and elements in the 2nd period (row) are pretty common
a family is a column of elements a period is a row of elements
Manganese is in the fourth period of the Periodic Table of Elements. Periods are rows, groups are columns within the Periodic Table of Elements.
A period is a row of elements on the periodic table.
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.
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
litium, and elements in the 2nd period (row) are pretty common
A period is a row in the periodic table of elements.
Their valence electrons are in the same energy level.
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
A row on the periodic table is called a period.