The reaction, 2MO(s) + CO₂(g) → M₂O₃(s) + CO(g) where M is a metallic element, is spontaneous at high temperatures but non-spontaneous at low temperatures.

If we assume that Δ_rH° and Δ_rS° are constant over a wide temperature range we can deduce that:

Identify which element I am?

I have a high electron affinity. The element on my left in the Periodic Table has a smaller electron affinity. The element on my right in the Periodic Table has a higher ionisation energy and essentially no electron affinity. I am toxic in my elemental state, but I am very commonly found in my non-toxic ionic state. Within my group, I have the highest ionisation energy.

Type the element symbol for your answer in the box provided. For example if you think the answer is hydrogen you should type " H "

Consider the following sketch of the interaction energy for two atoms as a function of distance between the atoms.

Which label, a) to e) points to the region where the attraction between the nuclei and electrons is dominating the interaction?

Consider the following sketch of the interaction energy for two atoms as a function of distance between the atoms.

Label e) refers to the point where the interaction energy is lowest and shows how the stable bond length is calculated.  At this point ____________

Represented is what type of bond?

Consider the following sketch of the interaction energy for two atoms as a function of distance between the atoms.

Which label, a) to e) points to the region where there is no interaction between the atoms?

The two clouds of electrons in a π-bond (shown below) represent ____________

What type(s) of atomic orbitals are pictured below?

What type(s) of atomic orbitals are pictured below?

What’s the electron configuration of an O^2– ion?