【 】How Many Neutrons Does Potassium Have||Number of Neutrons in Potassium

Answer:

Potassium has twenty neutrons for this isotope.

Explanation:

Hello, chemistry lover! today we are going to help you to find out  how many neutrons potassium  have in just 3 steps.

To find out the number of neutrons  for potassium,we have to have knowledge about atomic number,atomic mass,mass number of potassium.

                    Step-1:


●The atomic number of potassium is the number of protons in potassium's nucleus.


●The atomic mass of potassium is the average number of  protons plus neutrons of all the isotopes of potassium.


●The masss number of potassium is the number of protons plus neutrons of a specific isotope of potassium.

                    Step-2:

We need to convert atomic mass of potassium to mass number of  potassium by rounding if necessary (In case of fraction) .

From periodic table,


  ●Atomic number of potassium  is 19 .

●Atomic mass of  potassium is 39.10

●To find out mass number,we need to round 39.10 to a whole number.So,by rounding,we are getting mass number  of potassium.The mass number of potassium is 39.




                    Step-3:

By the difference between mass number and atomic number of potassium,we get the number of neutrons in potassium.


●Number of neutrons=39-19=20
Therefore,the number of neutrons in potassium is 20 here for this isotope.Remember that neutrons are present in the nucleous of potassium and it's charge is zero.

●Number of protons in potassium is 19.Protons are present in the nucleus of potassium.



● Number of electrons in potassium is 19.Remember that number of electron equals to proton in a neutral atom.Eletrons are present outside of nucleus of potassium.


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