Question

Which atom has mass no.2 and no.of protons as 1

Answer 1

Answer: Element Symbol Atomic No.

               Hydrogen H     1

                  Helium He      2

                   Lithium Li     3

Explanation:

Answer 2

Answer:

No element have mass no.2 and no. of proton 1

Explanation:

Because mass number of a element is the total no. of protons in it....

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