Question

which formula represents a covalent compound?
nacl
cao
mgs
h₂o₂

Explanation:

Covalent compounds are formed when non - metals share electrons. In \(NaCl\), \(Na\) (metal) and \(Cl\) (non - metal) form an ionic bond. In \(CaO\), \(Ca\) (metal) and \(O\) (non - metal) form an ionic bond. In \(MgS\), \(Mg\) (metal) and \(S\) (non - metal) form an ionic bond. In \(H_2O_2\), \(H\) (non - metal) and \(O\) (non - metal) share electrons to form covalent bonds.

Answer:

\(H_2O_2\)