Can you help please? A single electron occupies a subshell and has the quantum numbers n = 2, { = 1,ml = -1, ms = +12. Which of the following is an acceptable set of quantumnumbers for the next electron added to this subshell?He]2s2pA) n = 2, l = 1, ml = -1, ms = +½B) n = 2, l = 1, ml = -1, ms = -1½C) n = 3, l = 0, ml = 0, ms = +12D) n = 2, l = 1, ml = 0, ms = +12E) n = 2, l = 1, ml = 1, ms = -½ A single electron occupies a subshell and has the quantum numbers n = 3, { = 1,ml = 1, ms = +12. Which of the following is an acceptable set of quantum numbersfor the next electron added to this subshell?[Ne]3s3pA) n = 3, 1=2, ml = 0, ms = +½B) n = 3, l= 0, ml = 0, ms = -12C) n = 2, l = 0, ml = 0, ms = -1/2D) n = 3, 1 = 1, ml = 0, ms = -1½E) n = 3, l = 1, ml = 1, ms = +½

Principal quantum number : It denotes the principal electron shell of the given atom.Azimuthal quantum number : This describes the shape of orbital in consideration.Its value ranges from 0 to (n-1).Magnetic quantum number : It determines the number of orbitals in sub shell and its orientation.Its value ranges from -l to + l.Spin quantum number : It determines the spin of electrons in the given orbital/subshell.It has value either Given set of quantum number :As per Hund's rule electron filling in sublevel follows the rule that individually occupied by electrons then pairing of electrons happens , hence here, the electron will fill the next sublevel , so :{As for 2s energy shell , azimuthal quantum number is 0 to (n-1) i.e 0 and 1 , hence when l=0 sublevel=s, when l=1,,,sublevel=,p,.sublevel , so :Also , magnetic quantum number,, so :so, magnetic quantum number , and is already occupied,, azimuthal quantum number is 0 to (n-1) i.e 0 and 1 , hence when l=0 sublevel=s, when l=1 , sublevel= p .So, required set : Correct option : (D)As, electron is in 3p ,hence ,and the last sublevel is filled , hence now the new electron when added will start pairing from the initial sublevel.So, and So, required set : OR Correct option : (D)Part (A) : Correct option : (D)Part (B) : Correct option : (D)