Question

How many neutrons would there be in an atom of phosphorus- 33?(1 point) Responses 15 15 16 16 18 18 33

Answer 1

To find the number of neutrons in an atom of phosphorus-33 (\(^{33}\text{P}\)), you can use the formula:

\[
\text{Number of neutrons} = \text{mass number} - \text{atomic number}
\]

The atomic number of phosphorus (P) is 15, which represents the number of protons. The mass number of phosphorus-33 is 33.

So, the calculation would be:

\[
\text{Number of neutrons} = 33 - 15 = 18
\]

Therefore, an atom of phosphorus-33 has **18 neutrons**.