The lattice energy of mgcl2 is the energy change for which one of the following processes? a. mg(s) + cl2(g) → mgcl2(s)b. mg(g) + 2cl(g) → mgcl2(s)c. mg2+(s) + 2cl−(g) → mgcl2(g)d. mg2+(g) + 2cl−(g) → mgcl2(s)e. mgcl2(aq) → mgcl2(s)

Oh nskskakaaka

The problem here is that according to aufbau principle before 3d orbital 4s subshell comes.after filling 3p orbital with electrons you have 4 electrons left, you place two in 4s with opposite spin and the other two in 3d in any of its two orbitals of total five orbitals with the same spin.

The answer will be +250

Answer is: hydrogen is being oxidized.chemical reaction: co₂ + h₂ → co + h₂o.oxidation half reaction: h₂ → 2h⁺ + 2e⁻.reduction half reaction: c⁺⁴ + 2e⁻ → c⁺².oxidation is increase of oxidation number, hydrogen change oxidation number from neutral charge (in molecule of hydrogen) to oxidation number +1 (in water).