Mass and atomic number — task. Science CBSE, Class 9 New.

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Choose the correct answer given below:

Which of the following is correct for the element represented as \(_{Z}^{A}\textrm{X}\)

\(X\) is the mass number, \(A\) is the atomic number, \(Z\) is the symbol of the element
\(X\) is the symbol of the element, \(A\) is the mass number, \(Z\) is the atomic number
\(X\) is the atomic number, \(A\) is the number of neutrons, \(Z\) is the symbol of the element
\(X\) is the number of protons, \(A\) is the number of electrons, \(Z\) is the mass number

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15. Mass and atomic number