Chemistry Target 1.5
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Recognize isotopes of an element by nuclear particles, explain the relationship between nuclear stability and radioisotopes
A.
Which of the following isotopes has the same number of neutrons as phosphorus-31?
- 3216S
- 2914Si
- 3215P.
- 2814Si
B.
Isotopes of an element must have different what?
- atomic numbers
- numbers of protons
- numbers of electrons
- mass numbers