Chemistry I CH 8

Which of these compounds is most likely to be ionic?
KF, CCl4, CS2, CO2, ICl

Which of these compounds is most likely to be ionic?
GaAs, SrBr2, NO2, CBr4, H2O

Which of these compounds is most likely to be ionic?
NCl3, BaCl2, CO, SO2, SF4

Which of these pairs of elements would be most likely to form an ionic compounds?
Cl and I, Al and K, Cl and Mg, C and S, Al and Mg

Which of the following contains ionic bonding?
CO, SrF2, AL, OCl2, HCl

Which of the following is an ionic compound?
H2S, NH3, I2, KI, CCl4

Which of these ionic solids would have the largest lattice energy?
NaCl, NaF, CaBr2, CsI, CaCl2

Which of these ionic solids would have the largest lattice energy?
SrO, NaF, CaBr2, BaSO4

The lattice energy for ionic crystal increases as the charge on the ions and the size of the ions .
inc, inc
inc, dec
dec, inc
dec, dec
none of these

Select the compound with the highest (i.e., most negative) lattice energy.
CaS(s), BaO(s), NaI(s), LiBr(s), MgO(s)

A Born-Haber cycle applied to the formation reaction of an ionic solid. Is normally used to.. calculate ionization energy,
calculate electron affinity,
calculate bond energy,
determine the overal enthalpy change,
is an application of Hess's Law

Which of these compounds is most likely to be covalent?
Rb2S, SrCl2, CS2, CaO, MgI2

Which of these compounds is most likely to be covalent?
KF, CaCl2, SF4, Al2O3,CaSO4

Which of these compounds is most likely to be covalent?
CsOH, NF3, Sr(NO3)2, CaO, LiF

Which of the following is a covalent compound?
Na2O, CaCl2, Cl2O, CsCl, Al2O3

Which of the following is a covalent compound?
BaO, IBr, Mg, LiBr, Cu

Arrange the following bonds in order of increasing bond strength.
C-I < C-Br < C-Cl < C-F
C-F < C-Cl < C-Br < C-I
C-Br < C-I < C-Cl < C-F
C-I < C-Br < C-F < C-Cl
None of these orders is correct

Select the strongest bond in the following group.
C-S, C-O, C=C, C=N, C-F

Select the strongest bond in the following group.
C-C, C-O, C=C, C=C, C-F

Which is the correct order for increasing bond strength? (1) C=C (2) C=C (3) C-C
3 < 2 < 1
3 < 1 < 2
1 < 2 < 3
1 < 3 < 2
2 < 3 < 1

Which is the name given to the forces in a covalent compounds that exists between molecules?
Intramolecular forces
Intermolecular forces
Covalent forces
Ionic forces
Molecular forces

What type of elements undergo ionic bonding?
2 metals
a nonmetal and a metal
2 nonmetals
2 Group 1A element
2 Noble gases

What type of elements undergo covalent bonding?
1 metal and noble gas
a nonmetal and a metal
2 nonmetals
2 Group 1A elements
a actinide

In which of these substances are the atoms held together by polar covalent bonding?
SrCl2, CsCl, ClF, TiF2, S8

A polar covalent bond would form in which one of these pairs of atoms?
Cl---Cl
Si---Si
Ca---Cl
Cr---Br
P---Cl

A nonpolar covalent bond (i.e., pure covalent) would form in which of these pairs of atoms?
Na---Cl
H---Cl
Li---Br
Se---Br
Br---Br

Which of these covalent bonds is the most polar (i.e., highest percent ionic character)?
Al---I
Si---I
Al---Cl
Si---Cl
Si---P

The covalent bond with the greatest polarity would form in which of these atom pairs?
Br---Br
S---O
C---P
C---O
B---O

In which of these pairs of atoms would the bond be the least polar (i.e., lowest percent ionic character)?
C---Cl
C---C
C---H
O---C
N---C

Which of these elements has the greatest electronegativity?
Na, As, Ga, Cs, Sb

Which of these atom is the most electronegative?
Li, Cs, P, As, Ge

Which of these elements is the least electronegative?
Sr, V, Ni, P, I

Which of the following elements is the most electronegative?
S, Ru, Si, Te, Cs

Which of the following elements is the least electronegative?
Si, Se, S, Sc, Sr

Arrange aluminum, nitrogen, phosphorus, and indium in order of increasing electronegativity.
Al < In < N < P
Al < In < P < N
In < Al < P < N
In < P < Al < N
None of these orders is correct

Arrange calcium, rubidium, sulfur, and arsenic in order of decreasing electronegativity.
S > As > Rb > Ca
S > As > Ca > Rb
As > S > Rb > Ca
As > S > Ca > Rb
None of these orders is correct

Based on electronegativity trends in the periodic table, predict which of the following compounds will have the greatest % ionic character in its bonds.
H2O, LiI, CaO, RbF, HCl

The total number of bonding electrons in a molecule of formaldehyde (H2CO) is
3, 4, 6, 8,18

The total number of lone pairs in NCl3 is.
6, 8, 9, 10, 13