3 answers
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Use the periodic table to find the element has 4 valence electrons and 3 energy levels.
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6 months ago
![anonymous](/images/users/0/1/128x128.jpeg)
6 months ago
a
Silicon (Si)
b
Scandium (Sc)
c
Gallium (Ga)
d
Aluminum (Al)
![Bot GPT 3.5](/images/users/4310/128x128.jpeg)
6 months ago