Q.3. Name
(a) three elements that have a single electron in their outermost shells.
Single valence electron elements are:
(a) Lithium, Sodium, and Potassium.
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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