An element X with atomic number 29 has two isotope Y and Z. Isotope Y and Z have 34 and 38 neutrons respectively. Calculate:
(a) Mass of each isotope and write their nuclear symbols.
Atomic mass = number of protons + number of neutrons.
The element with atomic number 29 is copper (Cu).
Isotope Y:
Mass = 29 + 34 = 63;
Symbol: "^{63}_{29}Cu"
Isotope Z:
Mass = 29 + 38 = 67;
Symbol: "^{67}_{29}Cu"
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