【3 Steps】How Many Neutrons Does Yttrium(Y) Have?||Number of Neutrons inYttrium(Y)

How Many Neutrons Does 

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Yttrium(Y) Have?





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

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Descriptio







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



                    Step-1:



●The atomic number of 
 Yttrium(Y)  is the number of protons in Yttrium(Y)'s nucleus.



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


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



How Many Neutrons Does  Yttrium(Y) Have?




                    Step-2:

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





From periodic table,


  ●Atomic number of 
 Yttrium(Y) is 39.

●Atomic mass of  
Yttrium(Y) is 88.91

●To find out mass number,we need to round 
88.91 to a whole number.So,by rounding,we are getting mass number of  Yttrium(Y).The mass number of  Yttrium(Y) is 89
.




                    Step-3:

How Many Neutrons Does Yttrium(Y) Have?

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


●Number of neutrons=89-39=50

In another way,

●Mass number=Protons +Neutrons

Or,89 =39+Neutrons

Or,89-39=Neutrons

Therefore,
Neutrons=50





Therefore,the number of neutrons in Yttrium(Y) is 50 here for this isotope.Remember that neutrons are present in the nucleous of Yttrium(Y)and it's charge is zero.

●Number of protons in 
Yttrium(Y) is 39.Protons are present in the nucleus of Yttrium(Y) .



● Number of electrons in 
Yttrium(Y)  is 39.Remember that number of electron equals to proton in a neutral atom.Eletrons are present outside of nucleus of Yttrium(Y)  .


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