The period numberin the longformof theperiodictableis equalto

1.	The period numberin the longformof theperiodictableis equalto
Answer» magneticquantum number of anyelement OFTHE period. ATOMICNUMBER of any elementof the period . MAXIMUM PRINCIPAL quantum number of any ELEMENT of theperiod. maximum Azimuthalquantum number of anyelement ofthe period. Solution :Since eachperiodstartswith thefillingof electrons in a new principal quantum numberthereforetheperiodnumber inthelong form of the periodic table refers to the maximum principalquantum numberofany element in the periodi.e.,option ( c)iscorrect.

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