2 Multiple Choice (16 points) Circle one answer for each question. 4 points each

Question

2 Multiple Choice (16 points) Circle one answer for each question. 4 points each. Which property applies to identical particles that are labeled "Fermions" a) they possess integer spin angular momentum b) their angular momentum cannot be added c they always have (2)0 d) they obey the Pauli principle In atomic units, the mass of the proton is (circle the closest answer) b) 13.6 c) 1673 x10-27 d) 1836 Which of the following is not a valid set of quantum numbers for the orbitals of the hydrogen atom e) none of the above If the spin angular momenta of two spin-3/2 particles are added, the possible s values for the total spin angular momentum (such that ot )1)h2 w)are a) -3, -2,-1, 0, 1, 2, or 3 b) s-3, 2, 1, or 0 d) e) f) s-3, -5/2, -2, -3/2, -1, -1/2, 0, 1/2, 1, 3/2, 2, 5/2, or 3 s-3/2 or 1/2 Not enough information to answer the question because it depends on if the particles are identical or not

Explanation / Answer

1) fermions are half integer of spin and they obeys the pauli's principal

2) protanmass mp = 1.673*10^-27 kg

3) n = 27 , l= 0 and m = 0

4) s1 = 3/2 and s2 = 3/2

s = s1+s2 to s1-s2

s = +3 to -3

option a

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