Question
Chemistry Question on Modern Periodic Law And The Present Form Of The Periodic Table
The period number in the long form of the periodic table is equal to
A
magnetic quantum number of any element of the period
B
atomic number of any element of the period
C
maximum principal quantum number of any element of the period
D
maximum azimuthal quanoum numbers of any element of the period
Answer
maximum principal quantum number of any element of the period
Explanation
Solution
Period number = maximum n of any element where, n= principal quantum number .