Answer:
Step-by-step explanation:
Hope it helps! :)
Answer: i hope this is correct take care
Step-by-step explanation:
1:40.
1:40 is equal to 1/40, while 1:60 is equal to 1/60.
1/40 is the bigger fraction, so 1:40 is the correct answer.
Similarities: same atomic number
Differences: they have a different number of neutrons
