General Science Chemistry Basic Concepts of Chemistry

ଇଲେକ୍ଟ୍ରନ୍‌ ତୁଳନାରେ, ପ୍ରୋଟନ୍‌ ପ୍ରାୟ __________ ଗୁଣ ଭାରୀ।

1

1636

2

1736

3

1836

4

1936

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