What test can differentiate vanillin and alcohol?​

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

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?