뒤로
문제 99
Using each of the following electron arrangements, give the formulas for the cation and anion that form, the formula for the compound they form, and its name.
문제 102c
State the number of valence electrons, bonding pairs, and lone pairs in each of the following Lewis structures:
c.
문제 103c
Match each of the Lewis structures (a to c) with the correct diagram (1 to 3) of its shape, and name the shape; indicate if each molecule is polar or nonpolar. Assume X and Y are nonmetals and all bonds are polar covalent.
<IMAGE>
c.
문제 104a
Match each of the formulas (a to c) with the correct diagram (1 to 3) of its shape, and name the shape; indicate if each molecule is polar or nonpolar.
<IMAGE>
a. PBr3
문제 105d
Consider the following bonds: Ca and O, C and O, K and O, O and O, and N and O.
d. Arrange the covalent bonds in order of decreasing polarity.
문제 111b
Consider an ion with the symbol X2+ formed from a representative element.
b. What is the Lewis symbol of the element?
문제 111c
Consider an ion with the symbol X2+ formed from a representative element.
c. If X is in Period 3, what is the element?
문제 111d
Consider an ion with the symbol X2+ formed from a representative element.
d. What is the formula of the compound formed from X and the nitride ion?
문제 112b
Consider an ion with the symbol Y3- formed from a representative element.
b. What is the Lewis symbol of the element?
문제 112c
Consider an ion with the symbol Y3- formed from a representative element.
c. If Y is in Period 3, what is the element?
문제 113a
One of the ions of tin is tin(IV).
a. What is the symbol for this ion?
문제 113b
One of the ions of tin is tin(IV).
b. How many protons and electrons are in the ion?
문제 127b
Draw the Lewis structure for each of the following:
b. H2NOH (N is the central atom)
문제 128a
Draw the Lewis structure for each of the following:
a. H3COCH3 (the atoms are in the order C O C)
문제 131c
Select the more polar bond in each of the following pairs:
c. Br―Cl or S―Cl
문제 133a
Show the dipole arrow for each of the following bonds:
a. Si―Cl
문제 135a
Calculate the electronegativity difference and classify each of the following bonds as nonpolar covalent, polar covalent, or ionic:
a. Si and Cl
문제 135b
Calculate the electronegativity difference and classify each of the following bonds as nonpolar covalent, polar covalent, or ionic:
b. C and C
문제 135c
Calculate the electronegativity difference and classify each of the following bonds as nonpolar covalent, polar covalent, or ionic:
c. Na and Cl
문제 141a
Predict the shape and polarity of each of the following molecules, which have polar covalent bonds:
a. A central atom with three identical bonded atoms and one lone pair.
문제 149a
Identify the group number in the periodic table of X, a representative element, in each of the following ionic compounds:
a. XCl3
문제 149b
Identify the group number in the periodic table of X, a representative element, in each of the following ionic compounds:
b. Al2X3
문제 150b
Identify the group number in the periodic table of X, a representative element, in each of the following ionic compounds:
b. X2SO3
문제 151a
Classify each of the following as ionic or molecular, and name each:
a. Li2HPO4
문제 152b
Classify each of the following as ionic or molecular, and name each:
b. Cl2O7
문제 153a
Complete the Lewis structure for each of the following:
a.
문제 154c
Identify the errors in each of the following Lewis structures and draw the correct formula:
c.
