General Science Chemistry Basic Concepts of Chemistry

ଇଲେକ୍ଟ୍ରନ କିଏ ଆବିଷ୍କାର କରିଥିଲେ?  

1
ଜେ.ଜେ ଥମସନ୍
2
ଜନ୍ ଡାଲଟନ୍
3
ଜେମ୍ସ ଚାଡୱିକ
4
ରଦରଫୋର୍ଡ

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