Question

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Answer 1

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Explanation:

Na→Na  

+

+e  

−

 

A sodium atom and ion, differ by one electron.  

For 100 moles each of sodium atoms and ions there would be a difference of 100 moles of electrons.

Mass of 100 moles of electrons= 5.48002g

Mass of 1 mole of electron =  

100

5.48002

​  

g

Mass of one electron =  

100×6.022×10  

23

 

5.48002

​  

=9.1×10  

−28

g =9.1×10  

−31

kg