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An alkali metal loses its outer electron to form:

AA 2+ ion
BA 1- ion
CA 2- ion
DA 1+ ion
Answer & Solution
Correct answer: D. A 1+ ion
1. Alkali metals carry a single electron in the outermost shell. 2. Losing that one electron leaves a single positive charge. 3. So the ion formed is a 1+ ion. _Source: syllabus Chemistry Part I, Chapter 3, Classification of Elements and Periodicity in Properties._
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