WAEC - Chemistry (2019 - No. 45)
The atoms of \(^{64}_{29}\)Cu and \(^{65}_{30}\)Zn have the same number of?
nucleon
electrons
neutrons
protons
Paliwanag
The atomic mass is written as superscript = proton number + neutron number
- Atomic mass of Cu is 64 = 29 + 35
- Atomic mass of Zn is 65 = 30 + 35
Proton number is written as subscript