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কেন্দ্রীয় পরমাণুর অষ্টক পূর্ণ হচ্ছে-
i. H₂O
ii. BCl₃
iii. NCI₃
নিচের কোনটি সঠিক?

Created: 1 year ago | Updated: 1 year ago

Updated: 1 year ago

i ও ii

i ও iii

ii ও iii

i, ii ও iii

Explanation

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