It tells you the number of cations in the outer energy level of the element's Atomic Mass
the periodic number tells you the number of electrons and protons.
The periods in the periodic table tell you the energy level where the last electrons are being added. So, in period 1, the outermost electrons are in the first energy level or shell. In the 3rd period, the outermost electrons reside the the 3rd energy level, and so on.
Chlorine is Period 3.
Period 3. In the periodic table of elements you can decipher which period does an element belong by looking by the number of ROWS and which number is your element included in.
The atomic number of plutonium is 94.
Three.
The period number tell about the energy levels occupied by electrons
its tell you the atomics mass that occurs
For elements it's the atomic number not the "Period Number." This number tells you how many protons a single atom of that element has in its nucleus. The "period number" is a dimensionless quantity used in fluid dynamics.
the period number tells which is the highest energy level occupied by the electrons
the period number tells which is the highest energy level occupied by the electrons
the period number tells which is the highest energy level occupied by the electrons
the period number tells which is the highest energy level occupied by the electrons
The period tells you how many energy levels an atom has.
The atomic number represents the number of protons. The atomic mass represents the number of protons + neutrons.
By number of elctrons,protons in them and their reaction rate
Elements in the same period has same number of valence shells.There are 7 periods in Periodic Table.
No a guy just want be able to tell if you are on a period. Yes, some are able to tell by your behavior.