1.

FILL UP....✌✌ The best example for pure substance _____The most abundant element present in air______The avagardo number is always equal to______The valency of sodium is_____The number of protons present in an atom is called______ Answer all the questions...please.. no spam..❌❌

Answer»

num2.Nitrogen gas3.6.023*10²³4.+15.atomic NUMBER.



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