question_answer 60)

Symbols \[_{35}^{79}Br\] and \[{{\,}^{79}}Br\] can be written, whereas symbols\[\,_{79}^{35}Br\] and \[{{\,}^{35}}Br\] are not acceptable. Answer briefly.

Answer:

Mass number should be written as superscript and atomic number as subscript, hence the representation \[_{35}^{79}Br\] and \[{{\,}^{79}}Br\]are correct.