Q.3. Which element has
(d) a total of two shells, with three electrons in its valence shell?
The element having two shells and three electrons in its valence shell is Boron (B).
CBSE Class 10 board exams twice a year ‘relief’ or ‘burden’? Parents, schools share mixed views
CBSE Class 10 exams twice a year from 2026; 64.4% students in favor, second attempt optional
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