Question

nonmetals form covalent bonds (shared electron pairs) with other atoms.
which of the following is equal to the number of covalent bonds a nonmetal forms?
choose 1 answer:
the number of additional electrons the nonmetal needs to fill its valence shell
the number of electrons the nonmetal has after it fills its valence shell
the number of valence electrons in the neutral nonmetal

Explanation:

Covalent bonds are formed by sharing electrons. Non - metals aim to fill their valence shell (usually to achieve an octet or duet like in hydrogen). Each covalent bond provides one electron to help fill the valence shell. So, the number of additional electrons a non - metal needs to fill its valence shell is equal to the number of covalent bonds it forms. For example, oxygen has 6 valence electrons and needs 2 more to fill its valence shell (octet). Oxygen typically forms 2 covalent bonds (like in \(H_2O\)).

Answer:

A. the number of additional electrons the nonmetal needs to fill its valence shell