Question

This is how sodium appears in the periodic table. An orange box has N a at the center and 11 above. Below it says sodium and below that 22.99. A blue arrow points to 22.99. The arrow is pointing to sodium’s number of neutrons. number of valence electrons. combined number of neutrons and protons. combined number of electrons and protons.

Answer 1

Answer:

1 valence electrons

11 prontons

12 neutrons

Explanation:

$N_{11} = 1s^{2} 2s^{2} 2p^{6} 3s^{1}$

1 valence electrons

p = 11

11 prontons

A = p + n

A = 22,99 = 23

23 = 11 + n

n =

12 neutrons

Answer 2

Answer:

I believe it is answer C.

Explanation: