The nuclear symbol of an isotope of potassium is .Indicate the number of protons,number of neutrons,atomic number,and mass number of the isotope.
Number of protons Number of neutrons Atomic number Mass number

Question

The nuclear symbol of an isotope of potassium is  .Indicate the number of protons,number of neutrons,atomic number,and mass number of the isotope.
Number of protons Number of neutrons Atomic number Mass number

Quizplus · Accepted Answer

The atomic number of an element is equal to the number of protons in its nucleus. Therefore, the atomic number of the isotope is 19, which means it has 19 protons. 
The mass number of an isotope is equal to the number of protons plus the number of neutrons in its nucleus. Therefore, the mass number of the isotope is 41. 
To find the number of neutrons, subtract the number of protons (which is the same as the atomic number) from the mass number: 
41 - 19 = 22. Therefore, the isotope has 22 neutrons. 
Thus, the correct combination is A: 19 protons, 22 neutrons, atomic number 19, and mass number 41.

The Nuclear Symbol of an Isotope of Potassium Is