generally the atomic number
The "P" on the periodic table stands for "Period." Periods are the horizontal rows on the periodic table that indicate the number of electron shells present in an atom of an element.
The periods in the periodic table refer to the horizontal rows that indicate the number of electron shells an element's atoms have. There are 7 periods in the periodic table, each corresponding to the number of electron shells found in elements within that period.
Modern periodic table has 7 periods and 18 groups.
Fluorine is number 9.
Atomic number : 4
The "P" on the periodic table stands for "Period." Periods are the horizontal rows on the periodic table that indicate the number of electron shells present in an atom of an element.
The elements are placed in "periods" (rows) that indicate increasing atomic number, and in groups (columns) that indicate similar chemical properties.
The periodic table is an arrangement of the elementsfound in nature.
By the group number of the A columns.....go apex :D
By the group number of the A columns.....go apex :D
By the group number of the A columns.....go apex :D
The periods in the periodic table refer to the horizontal rows that indicate the number of electron shells an element's atoms have. There are 7 periods in the periodic table, each corresponding to the number of electron shells found in elements within that period.
The horizontal rows in the periodic table are called periods, and the vertical columns are called groups or families. Periods indicate the number of electron shells an element has, while groups determine the number of valence electrons.
The columns of the periodic table are called groups.
Gold is number 79 on the periodic table
the number of helium in the periodic table is 2.
The mass number of copper (Cu) is 63.5. This can be found by looking at the number located below the symbol "Cu" on the periodic table.