Quantum numbers

the values of the sublevels of a principle energy level are up to 2 , so this principle level is ................

• L

• N

• K

• M

In helium atom ₂He ........................

• the values of the spin quantum number are similar

• m_l = 1

• the values of the spin quantum number are different

• m_l = -1

what are the values of both principle and magnetic quantum numbers of the penultimate electron in sodium atom ₁₁Na

• n= 3 , m_l = +2

• n= 3 , m_l = -1

• n= 2 , m_l = +1

• n= 2 , m_l = -2

what is the sublevel in which the last electron has the two quantum numbers

( n = 2 , l = 0 )

• 2s

• 2p

• 1s

• 3p