Q.3. Which element has
(c) a total of three shells, with four electrons in its valence shell?
The element having three shells and four electrons in its valence shell is Silicon (Si).
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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