Question
1)Which of the following compounds has the largest lattice energy:
LiF
LiCl
NaF
NaCl
2)Which of the following compounds has the most ionic character in its bonding:
CaBr2
GeBr4
KBr
GaBr3
3)Using the electronegativity table on page 364 of your text, which end of the B-N bond is negative?
B
N
neither
both
4)The O-H bond in a water molecule is:
nonpolar covalent
ionic
polar covalent
ionic covalent
My answers are:
1)LiF
2)KBr
3)N
4)polar covalent
I just want to be completely sure of these answers before submitting them, since I just get one opportunity to do so. If someone could check this, it would be deeply appreciated. Also, if something is wrong, please explain... Thanks
LiF
LiCl
NaF
NaCl
2)Which of the following compounds has the most ionic character in its bonding:
CaBr2
GeBr4
KBr
GaBr3
3)Using the electronegativity table on page 364 of your text, which end of the B-N bond is negative?
B
N
neither
both
4)The O-H bond in a water molecule is:
nonpolar covalent
ionic
polar covalent
ionic covalent
My answers are:
1)LiF
2)KBr
3)N
4)polar covalent
I just want to be completely sure of these answers before submitting them, since I just get one opportunity to do so. If someone could check this, it would be deeply appreciated. Also, if something is wrong, please explain... Thanks
Answers
#1 is a little confusing with the use of the word largest. I think it is common practice to list LiF as the largest lattice energy but technically it is the smallest number.
Lattice energies are as follows:
LiF = -1036 kJ/mol
NaF = -923 kJ/mol
LiCl = -853 kJ/mol
NaCl = -787 kJ/mol
Therefore, I think you answer to #1 is ok but do keep the negative in mind.
2, 3, and 4 look ok to me.
Lattice energies are as follows:
LiF = -1036 kJ/mol
NaF = -923 kJ/mol
LiCl = -853 kJ/mol
NaCl = -787 kJ/mol
Therefore, I think you answer to #1 is ok but do keep the negative in mind.
2, 3, and 4 look ok to me.
GeBr4