The octahedral structure is not the only possible six- coordinate structure. other possibilities include a planar hexagonal structure and a triangular prism structure. in the latter, the ligands are arranged in two parallel trian- gles, one lying above the metal atom and the other below the metal atom with its corners directly in line with the corners of the first triangle. show that the existence of two and only two isomers of [co(nh3)4cl2]1 is evidence against both of these possible structures.

since electrons are negative the answer is neagtaive

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.