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

How Many Neutrons Does 

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Technetium (Tc) Have?



Hello, chemistry lover! today I am going to help you to find out how many neutrons technetium (Tc) have in just 3 steps.


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Description


Descriptio







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



                    Step-1:



●The atomic number of 
 technetium (Tc)   is the number of protons in technetium (Tc)  nucleus.



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


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



How Many Neutrons Does  technetium (Tc) Have?




                    Step-2:

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





From periodic table,


  ●Atomic number of 
 technetium (Tc)  is 43.

●Atomic mass of  
technetium (Tc)  is 98.91

●To find out mass number,we need to round 
98.91 to a whole number.


So,by rounding,we are getting the  mass number of technetium (Tc) .The mass number of technetium (Tc)  (we are getting) is 99.




                    Step-3:

How Many Neutrons Does technetium  Have?

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


●Number of neutrons=99-43=56

In another way,

●Mass number=Protons +Neutrons

Or,99 =43+Neutrons



Or,99-43=Neutrons

Therefore,
Neutrons=56





Therefore,the number of neutrons in technetium (Tc)  is 56 here for this isotope.Remember that neutrons are present in the nucleous of technetium (Tc)  and it's charge is zero.

●Number of protons in 
technetium (Tc)  is 43.Protons are present in the nucleus of technetium (Tc)  .





● Number of electrons in 
technetium (Tc)   is 43.Remember that number of electron equals to proton in a neutral atom.Eletrons are present outside of nucleus of technetium (Tc)   .


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