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문제 4e
State the number of electrons lost or gained when the following elements form ions:
e. Rb
문제 10b
Write the symbol for the ion of each of the following:
b. barium
문제 11a
Write the names for each of the following ions:
a. Li+
문제 11d
Write the names for each of the following ions:
d. P3-
문제 12b
Write the names for each of the following ions:
b. Sr2+
문제 17e
Write the correct ionic formula for the compound formed between each of the following pairs of ions:
e. Al3+ and S2-
문제 18a
Write the correct ionic formula for the compound formed between each of the following pairs of ions:
b. Ca2+ and S2-
문제 20c
Write the symbols for the ions, and the correct formula for the ionic compound formed by each of the following:
c. sodium and phosphorus
문제 24e
Write the name for each of the following ions (include the Roman numeral when necessary):
e. Au3+
문제 26a
Write the symbol for the cation in each of the following ionic compounds:
a. FeCl2
문제 36b
Write the formula including the charge for each of the following polyatomic ions:
b. sulfite
문제 37c
Name the following polyatomic ions:
c. HSO3-
문제 44d
Write the formula for the polyatomic ion and name each of the following compounds:
d. Fe(HCO3)3
문제 59d
Draw the Lewis structure for each of the following molecules:
d. ClNO2 (N is the central atom)
문제 65
Which electronegativity difference (a, b, or c) would you expect for a nonpolar covalent bond?
a. from 0.0 to 0.4
b. from 0.5 to 1.8
c. from 1.9 to 3.3
문제 67g
Consider the following Lewis symbols for elements X and Y:
g. Is the compound in part f ionic or molecular?
문제 69b
For each of the following bonds, indicate the positive end with 𝛿⁺ and the negative end with 𝛿⁻ . Draw an arrow to show the dipole for each.
a. N and F
문제 71b
Choose the shape (1 to 6) that matches each of the following descriptions (a to c):
1. linear
2. bent (109°)
3. trigonal planar
4. bent (120°)
5. trigonal pyramidal
6. tetrahedral
b. a molecule with a central atom that has four electron groups and three bonded atoms
문제 74b
Complete each of the following statements for a molecule of H2S:
c. The number of atoms attached to the central S atom is _______.
문제 75
Compare the Lewis structures of CF4 and NF3 Why do these molecules have different shapes?
문제 76
Compare the Lewis structures of CH4 and H2O Why do these molecules have similar bond angles but different molecular shapes?
문제 80
Why is CCl4 a nonpolar molecule, but is PCl3 a polar molecule?
문제 86b
Identify the major type of intermolecular forces between the particles of each of the following:
b. HCl
문제 93a
How does the octet rule explain the formation of a magnesium ion?
문제 93b
What noble gas has the same electron arrangement as the magnesium ion?
문제 93c
Why are Group 1A (1) and Group 2A (2) elements found in many compounds, but not Group 8A (18) elements?
문제 97b
Consider the following Lewis symbols for elements X and Y:
b. Will a compound of X and Y be ionic or molecular?
문제 97c
Consider the following Lewis symbols for elements X and Y:
c. What ions would be formed by X and Y?
문제 97d
Consider the following Lewis symbols for elements X and Y:
d. What would be the formula of a compound of X and Y?
문제 97e
Consider the following Lewis symbols for elements X and Y:
e. What would be the formula of a compound of X and sulfur?
