Question:একটি ইলেকট্রনের ভর কত? 

A `9.11xx10^(-31)kg` 
B `3.2xx10^(-28)kg` 
C `3.2xx10^(-56)kg` 
D `3.29xx10^(-26)kg` 

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A 

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Md. Sohel Arman

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