Question

The following three problems are about the following situation: You will be given an element in its ground state energy level. Determine what is a possible set of quantum numbers (n, l, m_l, m_s) for the outer electron.

43)  Hydrogen

(1, 0, 0, +1/2)

(1, 1, 0, +1/2)

(1, 0, 1, +1/2)

(2, 1, 0, -1/2)

(2, 0, 1, -1/2)

44)  Nitrogen

(2, -1, 1, +1/2)

(2, 0, 1, -1/2)

(2, 1, -1, +1/2)

(3, 0, -1, +1/2)

(3, 1, -1, -1/2)

45)  Sodium

(3, 0, 0, +1/2)

(3, 1, 1, +1/2)

(4, 2, 0, +1/2)

(4, 2, 1, +1/2)

(4, 3, 0, +1/2)

Answer 1

13) Electronic configuration Is' comparing with nL' principal quantum number nat e For s -l to te me me ms +/ mg=y2 n mao ndo me, ms) = (1, 0, 0, +42 199) Electronic con figuration N ts² 282 26,35 ZNE 1s? 4 252, 25 2p Last electron is in n=2 ; l 1 forb me = -l to the differing by 1 possible 5-1 to tl me 31, 0, +1

Mg = +42 +2 +2 9 1 7 m Thus n, d, m,, ms) = (2, 1,-1, +/ (45) for Sodium Nila 35 #t 152 25² 216 last electron is in E IS n = 3 eso fors orbital 9 me El to tl M = t4 meso mg = +1/2 1 me = a 11 = ( 3, 0 O (nd, me, ms +92)
Summary: I wrote electronic configuration to calculate quantum numbers of last electron.