Question
Question: The period number in the long form of the periodic table is equal to....
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 quantum number of any element of the period.
Answer
Maximum principal quantum number of any element of the period.
Explanation
Solution
: The period number in the long form of the periodic table in equal to maximum principal number of any elemnt of the period aseach period starts with the filling of electrons is a new principal quantum number.