Question

Can u show me how to calculate the neutron-to-proton ratio of an atom?
For example: tin-134 or silver-107

Answer 1

atomic number is number of protons. For Sn that is 50.
p + n = 134 which allows you to calculate number of neutrons as 84
Then n/p ratio is 84/50= ??
Check my work.

Answer 2

So the ratio is 1.68 then?

Answer 3

For Sn-134 yes. That looks high on my N/P chart but that's the way the numbers work out. That's a queer looking isotope of Sn which I guess is why. The ratio for Ag looks better on my chart.

Answer 4

12C
6