Which of these statements is true? A. The neutrons have a neutral charge and help stabilize an atom
B. The electrons have a negative charge and are in the nucleus
C. The protons have a negative charge and are in the nucleus
D. The electrons have a positive charge and orbit the nucleus in the electron cloud

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?