How many orbitals are there in d sub level?

Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.

Can someone me with 3 and 4 plz. this is for masteries test.

The msds for glacial acetic acid says that it is a flammable liquid that can severely burn any human tissue it comes in contact with. it reacts with bases, various metals, and strong oxidizing agents. its vapors can form explosive mixtures with air.