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ইলেকট্ৰন নিউট্ৰন আৰু প্ৰটনৰ ভিতৰত আটাইতকৈ কোন বিধ গধুৰ আৰু কোন বিধ পাতল ?

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উঃ নিউট্ৰন আটাইতকৈ গধুৰ, ইলেকট্ৰন আটাইতকৈ পাতল।

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