Answer:
[tex]{\boxed{\text{$_{29}^{70}${Cu}}}[/tex]
Explanation:
The atomic number (Z) of copper is 29 and this isotope has an atomic mass (A) of 70.
The general symbol for an isotope E is [tex]_{Z}^{A}\text{E}[/tex].
The atomic number is a left subscript, and the atomic mass is a left superscript.
[tex]\rm {\text{The nuclide notation for copper-70 is }}{\boxed{\textbf{$_{29}^{70}${Cu}}}[/tex]
