Question

Give atomic number and mass number of X​

Answer 1

Answer:

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Answer 2

Answer:

Mass Number(A) = Number of Protons + Number of Neutrons

An isotope of any element can be uniquely represented as AZX, where X is the atomic symbol of the element, A is the mass number and Z is the atomic number. The isotope of carbon that has 6 neutrons is therefore 126C.

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