State modern periodic law.

State the modern periodic law.

State modern periodic for the linear combination of atomic orbitals.

Who gave modern periodic law by observing X - ray spectra of element .

a] Why are sodium and chlorine placed in the same period in the Modern Periodic Table? b] Why do elements placed in the same group of the periodic table have similar chemical properties? c] Who proposed the modern periodic law? On which fundamental property of an atom is it based?

State the Modern Periodic law. What is the Modern Periodic Table called?

State the Modern Periodic law. Where are metals and nonmetals found in the Modern Periodic Table?