Question

according to the bohr model above, how many valence electrons does sodium have?
a 12
b 11
c 1
d 23

Explanation:

Step1: Understand valence electrons

Valence electrons are in the out - most shell.

Step2: Analyze the Bohr model

In the given Bohr model of sodium ($p = 11$, $n=12$), the electron distribution is 2 in the first shell, 8 in the second shell, and 1 in the third shell. The out - most shell has 1 electron.

Answer:

C. 1