Assertion : In the present form of periodic table, the period number corresponds to the highest prin

Question

Assertion : In the present form of periodic table, the period number corresponds to the highest principal quantum number of the elements in the period.\ Reason : Elements having similar outer electronic configurations in their atoms belong to same period.

Professor PC Thomas Classes · Answer

(c) : Elements having similar outer electronic configurations in their atoms are arranged in vertical columns, called groups or families.