2019年10月26日 · When drawing Lewis structure to be valid, each atom must have a full octet of 8 electrons (except hydrogen, which only has a duet of 2 electrons).

2021年5月6日 · Use the molar bond enthalpy data in the table to estimate the value of Δ 𝐻∘rxn for the equation.. C2H4(g)+HBr(g) C2H5Br(g)