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 nuclei-nuclei repulsion is dominating the interaction energy?

ultraviolet, violet, blue, green, yellow, orange, red, infrared

The regions of the electromagnetic spectrum listed above are ordered from left to right by: 

Which of the following is the correct electron configuration for a sulfur atom in its ground state?

Calculate the wavelength, in nm, of a photon that has a frequency of 2.62 x 10¹⁵ Hz.

Note: c = 2.998 × 10⁸ m s^–1.

Which statement best describes what quantum mechanics indicates about the energy of a particle which has its motion restricted? e.g. an electron bound to an atom.

Nitrosyl bromide decomposes according to the following equation:

Consider the reaction below, for which K = 0.212 at 100°C. 

N₂O₄ (g) ⇌  2 NO₂ (g)

2 NO₂ (g) ⇌ N₂O₄

Nitrosyl bromide decomposes according to the following equation:

Consider the following equilibrium reaction:

H₂CO₃ (aq)  ⇌  H⁺ (aq) + HCO₃^– (aq);     K = 5.0 x 10^–7

 If the initial concentrations of the species are:

[H₂CO₃] = 0.080 M;   [H⁺] = 1.00 x 10^–5 M;   [HCO₃^–] = 4.00 x 10^–3 M

Which one of the statements below describes the relationship between Q and K and then the correct direction of chemical change?

At 1000.0 K, the equilibrium constant for the reaction