Symbols \(_{35}^{79}\textrm{Br}\: and\: _{}^{79}\textrm{Br}\) can be written, whereas symbols \(_{79}^{35}\textrm{Br}\: and\: _{}^{35}\textrm{Br}\) are not acceptable. Answer briefly.

Asked by Abhisek | 1 year ago |  78

1 Answer

Solution :-

The general convention followed while representing elements along with their atomic masses (A), 

and their atomic numbers (Z) is \(_{Z}^{A}\textrm{X}.\)

Therefore, \(_{35}^{79}\textrm{Br}\)  is acceptable but \(_{79}^{35}\textrm{Br}\) is not.

\( _{}^{79}\textrm{Br}\) is an acceptable representation but \( _{}^{35}\textrm{Br}\)  is not since the atomic numbers of elements are constant but mass numbers are not (due to the existence isotopes).

Answered by Pragya Singh | 1 year ago

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