Question

Which of the following are possible sets of quantum numbers for an electron in an atom? Click the boxes with the correct answers.

(Select all that apply.)

n = 4, l = 1, m_l = -2, m_s = +1/2

n = 2, l = 1, m_l = -1, m_s = +1/2

n = 1, l = 0, m_l = 1

n = 1, l = 0, m_l = 1, m_s = +1/2

n = 3, l = 0, m_l = 0, m_s = +1/2

Answer 1

Answers are B and E

n = 2, l = 1, ml = -1, ms = +1/2

n = 3, l = 0, ml = 0, ms = +1/2

if n = 4, l has zero to 4-1 values those are 0, 1, 2

m has -l to +l values, ex: for l = 2, m has values from -2 to +2.

For A) n =4 means l has 0,1,2,3 values

l = 1 m has -1, 0, +1 values they shown m = -2 therefore it is not possible

for B) n = 2 means l has -2 t0 +2 values

l = 1 m has -1, 0, +1 values they shown m = -1. it is possible

and m_s has either +1/2 or -1/2. therfore it is possible set

for C) l =0 means m_l = 0, they shown m_l = 0 therefore it is not possible

for D) also same

For E) possible set