The element radium has a mass number of 226 and an atomic number of 88. How many neutrons does an atom of radium have?(1 point)
Responses
88
88
226
226
138
138
314
314
1 answer
138
Responses
88
88
226
226
138
138
314
314
1 answer
1 answer
1 answer
1 answer
1 answer