Question

3 fill in the blank 1 point silicon (si) has type your answer... energy levels and has type your answer... valence electrons.

Explanation:

Step1: Recall electron - shell arrangement

Silicon has atomic number 14. Its electron configuration is 1s²2s²2p⁶3s²3p².

Step2: Determine energy levels

The electrons are in 1st, 2nd and 3rd energy levels, so 3 energy levels.

Step3: Determine valence electrons

Valence electrons are in the outermost shell. In 3s²3p², there are 2 + 2 = 4 valence electrons.

Answer:

First blank: 3
Second blank: 4