Answer:
3
three half-filled orbitals each capable of forming a single covalent Bond and an additional lone - pair of electrons
I think the correct answer among the choices presented above is option C. The <span>atomic number of an atom is equivalent to the number of protons in the nucleus. For a neutral atom, it is also the number of electrons since in a neutral atom protons and electrons are present in equal number.</span>
C. Sn (tin) is a metal, Si (silicon) is a metalloid, and C (carbon) is a nonmetal
The correct answer is
B.The elements all have three valence electrons
