m1
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ma’ruf tongotarov | kimyo2026 milliy sertifikat 1 1-variant _______________________________________ 1. quyidagilarni jism va moddaga ajratsak, ulardan nechtasi modda bo‘ladi? spirt, oltin, kumush tanga, suv a) 1 b) 2 c) 3 d) 4 2. 1 mol xo va 2 mol xo2 aralashmasining massasi 122 g bo‘lsa, x elementning molyar massasini (g/mol) aniqlang. a) 12 b) 14 c) 24 d) 28 3. qaysi qatorda elektronlari soni farqli bo‘lgan ionlar berilgan? a) na+ va mg2+ b) k+ va ca2+ c) ca2+ va s2- d) al3+ va cl- 4. quyidagilarni moslang. a) k2l8m4; b) k2l8m8n1; c) k2l8m8; d) k2l8m8n18o2. 1) na; 2) br-; 3) s2-; 4) si; 5) k; 6) sr. a) a – 1, b – 5, c – 3, d – 6 …
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