Answer:
copper - 52 (or Cu - 52)
⁵²Cu
Step-by-step explanation:
Isotopes are different atoms of the same element that differ in the number of neutrons. Therefore, you can determine which element this is by examining the number of protons. All atoms with 29 protons are copper (Cu).
The mass number is the total number of protons and neutrons in an atom. Therefore, the mass number of this isotope is 52 (29 + 23 = 53). When writing an elemental symbol, the mass number is found on the top left.
As such, the name of this isotope is copper - 52 (or Cu - 52) and the symbol is ⁵²Cu.