Jordanramirez51
Jordanramirez51 Jordanramirez51
  • 19-06-2018
  • Physics
contestada

Potassium has a mass number of 40 and an atomic number of 19. How many protons does it have?

A.59
B.21
C.19
D.40

Respuesta :

2NS
2NS 2NS
  • 19-06-2018
The answer is C.
Potassium-40 or any type of potassium always has an atomic number 19 and 19 protons. 
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valeera
valeera valeera
  • 19-06-2018
The answer is c. 19


The atomic number always represents number of protons
Answer Link

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