To find the number of neutrons in an atom, subtract the atomic number from the atomic mass.
Number of neutrons = Atomic mass - Atomic number
Number of neutrons = 31 - 15
Number of neutrons = 16
Therefore, there are 16 neutrons in an atom of phosphorous (P).
The element phosphorous (P) has an atomic number of 15 and an atomic mass of 31. How many neutrons are in an atom of phosphorous (P)?
3 answers
Fluorine has an atomic number of 9 and an atomic mass of 19. How many protons, neutrons, and
The atomic number of an element corresponds to the number of protons in its nucleus. Therefore, fluorine (F) has 9 protons.
To find the number of neutrons, subtract the atomic number from the atomic mass.
Number of neutrons = Atomic mass - Atomic number
Number of neutrons = 19 - 9
Number of neutrons = 10
Therefore, fluorine has 9 protons, 10 neutrons, and 9 electrons (since atoms are neutral and have an equal number of protons and electrons).
To find the number of neutrons, subtract the atomic number from the atomic mass.
Number of neutrons = Atomic mass - Atomic number
Number of neutrons = 19 - 9
Number of neutrons = 10
Therefore, fluorine has 9 protons, 10 neutrons, and 9 electrons (since atoms are neutral and have an equal number of protons and electrons).