MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryPeriodic PropertiesModern Periodic Table
The periods in the Periodic Table are numbered from
A.1 to 16
B.1 to 18
C.1 to 7✓ Correct
D.None of the above
Explanation
The period are numbered from 1 to 7. The period number corresponds to the highest principal quantum number (n) of the elements in the period.
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