Question
Using your periodic table, how many neutrons are in tin-119? Tin has the symbol Sn.
Responses
66
66
69
69
68
68
70
Responses
66
66
69
69
68
68
70
Answers
GPT-4o mini
To determine the number of neutrons in tin-119 (Sn-119), we need to know the atomic number of tin (Sn) and how to calculate the number of neutrons.
The atomic number of tin (Sn) is 50, which means it has 50 protons. The mass number of an isotope is the sum of protons and neutrons. For tin-119, the mass number is 119.
To find the number of neutrons, we can use the formula:
\[
\text{Number of neutrons} = \text{Mass number} - \text{Atomic number}
\]
Plugging in the values:
\[
\text{Number of neutrons} = 119 - 50 = 69
\]
So, tin-119 has 69 neutrons.
The correct response is: **69**.
The atomic number of tin (Sn) is 50, which means it has 50 protons. The mass number of an isotope is the sum of protons and neutrons. For tin-119, the mass number is 119.
To find the number of neutrons, we can use the formula:
\[
\text{Number of neutrons} = \text{Mass number} - \text{Atomic number}
\]
Plugging in the values:
\[
\text{Number of neutrons} = 119 - 50 = 69
\]
So, tin-119 has 69 neutrons.
The correct response is: **69**.