My assigned question was #25.
Write the set of quantum numbers for the last electron placed for:
a) S^2- b) Pb c) Au d) W e) P f) Ba^2
Answers:
a) (3,1,1,-1/2)
- Equivalent orbital diagram to Ar
b) (6,1,0,1/2)
c) (5,2,2,-1/2)
- Has the "d-block" exception applied
d) (5,2,2,1/2)
- Has the "d-block" exception applied
e) (3,1,0,1/2)
f) (5,1,1,-1/2)
- Equivalent orbital diagram to Xe
Very good Alienor! The only thing i got different was e. I got (3, 1, 1, 1/2) because there are three unpaired electrons.
ReplyDeleteI cant make a new post but here is my test review answer anyway:
ReplyDelete23)
a. 590mL (.590L) X
-55.0 degrees Celsius (218K) 30.0 degrees Celsius (303K)
V2= (V1)(T2)/T1
V2= (.590)(303)/218
V2= .820L or 820 mL
b. .1400L X
308 K 273.15 K
.96 atm 1 atm
V2= (P1)(V1)(T2)/(T1)(P2)
V2= (.96)(.1400)(273.15)/(308)(1)
V2= .12 L
c.
2H2 (g) + O2 (g) > 2H2O (g)
g of O2= 20.0g
V of H2O=?
P=825mmHg
T=225 C +273.15 K= 498K
825mmHg x 1 atm/760.0 mmHg = 1.09 atm
20.0g O2 x 1 mol/32g x 2 mol H2O/ 1 mol O2 = 1.3 mol H2O
(use ideal gas law> PV=nRT)
V=(1.3 mol H2O)(.0821Latm/molK)(489 K)/1.09atm
V=48.8 L H20
Alienor, did you mean 4.88 L H2O?
ReplyDelete-nicole