1) modda nima a) atomlar yig‘indisi b) molekular yig‘indosi c) ionlar yig‘ d) jismlar yig‘ 2) elementlar qatorini top a) ftor b) suv c) amiak d) metan 3) CO nimaning formulaso a) karbonat angidrid b) suv c) havo d) is gazi 4) kislorodning atom massasi a) 17 b) 18 c) 16 d) 32

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