State the differences between Transition metals and S-blocks metals

What is the lowest number energy level where a d sublevel is found

Describe the forces both attractive and repulsive that occur as two atoms move closer together.

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.