CHEM 1411 Exam 3 Summer 12018 43) The formal charge on sulfur insoais where co:
ID: 704833 • Letter: C
Question
CHEM 1411 Exam 3 Summer 12018 43) The formal charge on sulfur insoais where co: 0: C) +2 D) +4 E) -4 44) The density of krypton gas at 0.866 atm and 44.4 °C isL A) 0.359 C) 5.57 1.0 323 6: 0.0332 32 ?Y' 8,.HYghnn (maqb )(.v3 1.78 e electron domain and molecular geometry of SO, are A) trigonal planar, trigonal planar 45) 1 B trigonal planar, bent C) octahedral, seesaw D) trigonal bipyramidal, T-shaped E) trigonal bipyramidal, trigonal planar 46) In general, as you go across a period in the periodic table from lelf to right: (1) the atomic radius (2) the electron affinity becomes more (3) the first ionization energy increases, increasingly decreases, increasingly, decreases increases, increasingly, decreases peniodic table decreases, increasingly, increases tL 47) The effective nucleucharge of an atom is primarily affected by- A inner electrons in a she ! abae the e- cou? c) D) E) nuclear charge electron distribution orbital radial probability outer electrons 425 e- ih shetls iwer than the hes answer is mner e-Explanation / Answer
43. Formal charge= valence electrons - non bonding valence electrons - bonding electrons/2
For sulfur, 6-0-6 = 0.
Answer: a)0
44. PV= nRT
n/V = P/RT
n/V = 0.844/(0.08205)(44.4+273.15) = 0.03323
Molar mass of Krypton= 83.788g/mol
Density= 83.788*0.03323 = 2.78
Answer: e) 2.78
45. a) trigonal planar, trigonal planar
46.e)
The atomic radius decreases because as the number of protons increases the forces of attraction increases and hence ionization energy also increases.