Respuesta :
Answer:
Zinc-64: Number of protons is 30. Number of neutrons 34.
Zinc-66: Number of protons is 30. Number of neutrons 36.
Explanation:
The atomic number of Zinc is 30, so in every Zinc atom, regardless of whether it's an isotope or not, will always have 30 protons.
The atomic number of an equivalent to the number of protons, and never changes.
The isotope number is the sum of the protons and neutrons in the nucleus.
Isotope number = atomic number + neutrons
So if we have 30 protons, and we're trying to find the number of neutrons in Zinc-64 we just subtract 30 from 64.
64 - 30 = 34
So now we know that there are 34 neutrons in Zinc-64
Same thing goes for Zinc-66.
66 - 30 = 36
There are 36 neutrons in Zinc-66.
Hope that's helpful!
