Noice Question Which statement correctly describes the relationship between atomic weight and mass number?

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?

What are fossils of organisms that existed over a wide area but only for a limited time period called?

Most points for whoever anwers i need your which is not an isotope of carbon? a. carbon-6 b. carbon-12 c. carbon-13 d. carbon-14