Which elements likely conduct electricity well? chromium iodine carbon calcium osmium

How do the energy differences between the higher energy levels of an atom compare with the energy difference between the lower energy level of the atom

Consider the equilibrium system: 2icl(s) ⇄ i2(s) + cl2(g) which of the following changes will increase the total amount of of cl2 that can be produced? all of the listed answers are correct decreasing the volume of the container removing the cl2 as it is formed adding more icl(s) removing some of the i2(s)

What is the formula of the ionic compound composed of calcium cations and chloride anions