Context: the mass number of a neutral atom of phosphorus-31
Question
Context: the mass number of a neutral atom of phosphorus-31
Solution
The mass number of a neutral atom of phosphorus-31 is 31. This is because the mass number of an atom is determined by the sum of the number of protons and neutrons in the nucleus. Phosphorus-31 means there are 31 particles in the nucleus, and since phosphorus has 15 protons, the remaining 16 are neutrons. Therefore, the mass number is 31.
Similar Questions
Determine the number of protons in a neutral atom of phosphorus-31
Determine the atomic number for an atom of phosphorus-31
An atom of phosphorus has an atomic number of 15 and a mass number of 31. How many neutrons does it contain?
Define the mass number of an atom.
In a neutral atom, the number of protons is always equal to:A the number of neutronsB the number of electronsC the number of nucleonsD the atomic mass*1 pointABCD
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