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من عناصر المجموعة الأولى
Ca
Sr
Li
Fe
رمز الصوديوم
Na
من اللافلزات
H
Fr
أي عنصرين ينتموا إلى المجموعة الأولى
Br - Li
Ca - Na
H - Cs
Pb - Ba
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8 questions
KIỂM TRA CUỐI BÀI 1 VÀ 2 LỚP 11
Worksheet
•
11th Grade
Solubility & Concentrations Practice Quiz
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1st - 12th Grade
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Phy Sci, Tuesday Exit Ticket, 12.11.18
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Chemical Reactions and Activity Series