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The electrons of the outermost shell are known as:
AValence
BVacant
CVarious
DVertical
Answer & Solution
Correct answer: A. Valence
1. Only some electrons take part when a molecule forms.
2. Only the outer shell electrons take part in chemical combination.
3. They are known as valence electrons.
_Source: syllabus Chemistry, Ch 4 'Chemical Bonding and Molecular Structure'_
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