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All alkali metals in their compounds have an oxidation number of:

APlus five

BPlus one

CPlus two

DPlus four

Answer & Solution

Correct answer: B. Plus one

1. Alkaline earth metals carry plus two. 2. Alkali metals sit one group to their left. 3. They carry plus one. _Source: syllabus Chemistry, Unit 7 'Redox Reactions'_

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