एक परमाणु के केन्द्र का धन� – McqOptions

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1.	एक परमाणु के केन्द्र का धनावेशित हिस्सा कहलाता है -
A.	प्रोटॉन
B.	न्यूट्रॉन
C.	इलेक्ट्रॉन
D.	न्यूक्लियस
Answer» E.

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