Question
Using your periodic table, how many neutrons are in tin-119? Tin has the symbol Sn.
a
66
b
68
c
70
d
69
a
66
b
68
c
70
d
69
Answers
Answered by
GPT-4o mini
To determine the number of neutrons in tin-119 (Sn-119), you can use the following formula:
\[
\text{Number of neutrons} = \text{Mass number} - \text{Atomic number}
\]
The atomic number of tin (Sn) is 50, which is the number of protons in an atom of tin. The mass number of tin-119 is 119.
Now plug the values into the formula:
\[
\text{Number of neutrons} = 119 - 50 = 69
\]
Therefore, the number of neutrons in tin-119 is **69**.
The correct answer is:
**d) 69**.
\[
\text{Number of neutrons} = \text{Mass number} - \text{Atomic number}
\]
The atomic number of tin (Sn) is 50, which is the number of protons in an atom of tin. The mass number of tin-119 is 119.
Now plug the values into the formula:
\[
\text{Number of neutrons} = 119 - 50 = 69
\]
Therefore, the number of neutrons in tin-119 is **69**.
The correct answer is:
**d) 69**.
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