Correct Answer: Option C

Explanation

Sodium is an alkali metal, and its atomic number is 11. This means that it has 11 electrons, and its electron configuration is \(1s^2 2s^2 2p^6 3s^1\). The valence electrons are the electrons in the outermost shell, which in this case is the 3s orbital.

• write out the name of the student that started cultism? Answer this

  1 Answers   ·   Economics   ·   3 hours ago
• f(x)=x+1/2,find f-1(-2)? Answer this

  1 Answers   ·   3 hours ago
• May/ June waec question 2012 no.12? Answer this

  1 Answers   ·   Physics   ·   5 hours ago