railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) General Science Chemistry Structure of Atom

ସବଆଟୋମିକ୍ କଣିକା ଗୁଡିକ ହେଉଛି:

1
ଇଲେକ୍ଟ୍ରନ୍
2
ପ୍ରୋଟନ୍
3
ନ୍ୟୁଟ୍ରନ୍
4
ଏହି ସମସ୍ତ
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