Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The period number in the long form of the periodic table is equal to:
Text Solution
Verified by ExpertsThe correct answer is:
C
Since, each period starts with the filling of electrons in a new principal quantum number, therefore, the period number in the long form of the periodic table refers to the maximum principal quantum number of any element in the period. Period number 
maximum ' 
' of any element (where, 
principal quantum number).
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
Consider the isoelectronic species, and . The correct order of increasing length of their radii i…
The order of screening effect of electrons of and f orbitals of a given shell of an atom on its ou…
The first ionisation enthalpies of and Si are in the order:
The statement that is not correct for periodic classification of elements is:
Among halogens, the correct order of amount of energy released (electron gain enthalpy) is:
The elements in which electrons are progressively filled in 4f -orbital are called: