NH3: N(-3), H(+1)
CO2: C(+4), O(-2)
MgO: Mg(+2), O(-2)
NaOH: Na(+1), O(-2), H(+1)
H2: H(+1)
H2S: H(-2), S(+2)
NH3: N(-3), H(+1)
CO2: C(+4), O(-2)
MgO: Mg(+2), O(-2)
NaOH: Na(+1), O(-2), H(+1)
H2: H(+1)
H2S: H(-2), S(+2)