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A sodium atom that loses its single valence electron becomes a positively charged:
ACation
BCarton
CCavern
DCaldron
Answer & Solution
Correct answer: A. Cation
1. Losing a negative electron leaves extra positive charge.
2. The atom is no longer neutral.
3. It becomes a cation.
_Source: syllabus Science Class IX, Chapter 9, Atomic Foundations of Matter._
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