Q.3. Which element has
(e) twice as many electrons in its second shell as in its first shell?
The element having twice as many electrons in its second shell as in its first shell will be:
Carbon with electronic configuration:
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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