Q 3038478302.    

Assertion : According to Mendeleev, periodic properties of elements are periodic function of their atomic number.

Reason : Atomic number is equal to the number of protons.

A Both A and R individually true and R is the correct explanation of A
B Both A and R are individually true but R is not the correct explanation of A
C A is true but R is false
D A is false but R is true

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