For an atom of sulfur, there are? 1. two electron shells with 6 valence electrons
2. three electron shells with 6 valence electrons
3. four electron shells with 6 valence electrons
4. five electron shells with 6 valence electrons

I think its b, but ik not completely sure.

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

false

because it does not have the potential to be entirely used up