Is it true three or more different atoms are necessary to call a compound a molecule

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?