Question

which of the following is the noble gas notation for sodium?
a he 2s^1
b ne 3s^1
c ar 3s^1
d he 2s^2 2p^5
question 3 (1 point)
which family of elements is highlighted below?

Explanation:

Sodium (Na) has an atomic number of 11. The noble - gas notation uses the electron configuration of the nearest noble gas with a lower atomic number to start. Neon (Ne) has an atomic number of 10. The remaining electron of sodium goes into the 3s orbital. So the noble - gas notation for sodium is [Ne] 3s¹.

Answer:

B. [Ne] 3s¹