【3 Steps】How Many Neutrons Does Krypton(Kr) Have?||Number of Neutrons in Krypton(Kr)

How Many Neutrons Does Krypton(Kr) Have?





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

Descriptio







To find out the number of neutrons  for  krypton (Kr) ,we have to have knowledge about atomic number,atomic mass,mass number of  krypton (Kr)
.Click picture to see clearly.



                    Step-1:


●The atomic number of  krypton (Kr)   is the number of protons in  krypton (Kr) 's nucleus.


●The atomic mass of  krypton (Kr)   is the average number of  protons plus neutrons of all the isotopes of  krypton (Kr)   .


●The masss number of  krypton (Kr)is the number of protons plus neutrons of a specific isotope of  krypton (Kr)  .



How Many Neutrons Does krypton (Kr)Have?




                    Step-2:

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





From periodic table,


  ●Atomic number of  krypton (Kr)   is 36.

●Atomic mass of  krypton (Kr)  is 83.80

●To find out mass number,we need to round 83.80 to a whole number.So,by rounding,we are getting mass number of  krypton (Kr).The mass number of  krypton (Kr)  is 84.




                    Step-3:

How Many Neutrons Does krypton (Kr) Have?

By the difference between mass number and atomic number of krypton (Kr),we get the number of neutrons in krypton (Kr) .


●Number of neutrons=84-36=48

In another way,

●Mass number=Protons +Neutrons

Or,84 =36+Neutrons

Or,84-36=Neutrons

Therefore,
Neutrons=48




Therefore,the number of neutrons in krypton (Kr) is 48 here for this isotope.Remember that neutrons are present in the nucleous of krypton (Kr)and it's charge is zero.

●Number of protons in krypton (Kr) is 36.Protons are present in the nucleus of krypton (Kr).



● Number of electrons in krypton (Kr) is 36.Remember that number of electron equals to proton in a neutral atom.Eletrons are present outside of nucleus of krypton (Kr)   .


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