Question

Which element has?

twice as many electrons in its second shell as in its first shell?

Answer 1

Carbon:

• Carbon is a chemical element with an atomic number $6$ and an atomic symbol $\mathrm{C}$.
• It belongs to Group-$14$ and the second period.
• Carbon has twice as many electrons in its second shell as in its first shell.

Electronic configuration of Carbon:

• The electronic configuration of Carbon is $1s^{2}2s^{2}2p^2$.
• The distribution of electrons per shell is $2,4$.