Chemistry

Problem

Which of the following best describes the pure substance with the formula CaCl

_2

? a) A molecular compound consisting of discrete

\mathrm{CaCl_2}

molecules in which calcium and chlorine share electron pairs b) An ionic compound composed of

\mathrm{Ca^{+}}

and

\mathrm{Cl^{-}}

ions in a

1{:}1

ratio c) An ionic compound consisting of

\mathrm{Ca^{2+}}

and

\mathrm{Cl^{-}}

ions arranged in a crystal lattice d) A network-covalent solid formed by infinite Ca–Cl covalent bonds extending throughout the crystal