Answer to Question #255997 in Inorganic Chemistry for Alex

Question

Avogadro’s number N_A = 6.022 x 10²³

1. Write the full electron configuration (with details of sub-shells) for the

element Rhenium.

2. Fluorine exists in diatomic form (e.g. F₂ in each oxygen molecule) under

standard temperature and pressure (STP). If the density of fluorine at STP is

1.696 kg/m³, calculate the number of fluorine molecules in 1 m³ of fluorine,

at STP.

3. The lattice structure of potassium chloride is similar to face-centred cubic

structure, with a unit cell as shown in Figure 3, where the blue spheres are

the potassium atoms, and the green spheres are the chlorine atoms. If the

density of a potassium chloride crystal is 1984 kg/m³, find the side length of

the unit cell.

Answer 1

Xe 4f14 5d5 6s2