1. Sodium and potassium have similar chemical and physical properties. This is b
ID: 637655 • Letter: 1
Question
1.
Sodium and potassium have similar chemical and physical properties. This is best explained by the fact that both element:
A. have relatively low first ionization energies.
B. have low relative atomic masses.
C. have the same ground-state valence-electron configuration.
D. are in Period 1 of the periodic table.
E. are active metals.
2.
Which of the following species would be expected to have chemical properties most similar to those of the nitrogen atom?
A. nitrite ion
B. phosphate ion
C. phosphide ion
D. nitride ion
E. phosphorus atom
3.
Which of the following statements is true concerning a concentrated solution of lithium oxide in water?
A. The resulting solution is strongly basic.
B. The resulting solution is weakly basic.
C. The resulting solution is weakly acidic.
D. The resulting solution is neither acidic nor basic.
E. The resulting solution is strongly acidic.
4.
An atom of which of the following elements has the largest second ionization energy?
A. Si
B. S
C. Na
D. Mg
E. Cl
5.
An atom of which of the following elements has the smallest first ionization energy?
A. S
B. Na
C. P
D. Si
E. Cl
6.
A section of the periodic table with all identification features removed is shown below.
Which element has the smallest atomic radius?
A. Z
B. V
C. W
D. Y
E. X
Which of the following atoms is diamagnetic in its ground state?
A. C
B. Cl
C. Ar
D. B
E. O
8.
The quantum numbers of an atom's highest-energy valence electrons are n=5 and l=1. The element to which this atom belongs could be a
A. inner transition metal.
B. p-block main-group element.
C. transition metal.
D. alkali metal.
E. s-block main-group element.
9.
Two elements that have the same ground-state valence shell configuration of ns2np2 are
A. K and Mg
B. Mg and Ca
C. Ge and Pb
D. Al and Ga
E. O and Se
10.
Which of the following have 10 electrons in d orbitals?
A. Fe
B. Mn
C. Two of the above
D. Cu
E. Zn
11.
Which of the following statements is true concerning the electron configuration [Kr]5p2?
A. This configuration cannot be the ground-state electron configuration for a Sr atom because it violates the Aufbau principle.
B. This configuration cannot be the ground-state electron configuration for a Sr atom because it violates the Heisenberg uncertainy principle.
C. This configuration cannot be the ground-state electron configuration for a Sr atom because it violates the Paul exclusion principle.
D. This configuration cannot be the ground-state electron configuration for a Sr atom because it violates Hund's rule.
E. This configuration is the ground-state electron configuration for a Sr atom.
12.
All of the following ground-state electron configurations are correct except
A. V: [Ar]4s24d3
B. Cr: [Ar]3d54s1
C. Sn: [Kr]4d105s25p2
D. Te: [Kr]4d105s25p4
E. K: [Ar]4s1
Answers that I got: 1-A, 2-A, 3-C, 4-C, 5-B, 6-C, 7-E, 8-B, 9-C, 10-A, 11-E, 12-D
Double checking to see if I've got the correct answers.
A. have relatively low first ionization energies.
B. have low relative atomic masses.
C. have the same ground-state valence-electron configuration.
D. are in Period 1 of the periodic table.
E. are active metals.
2.
Which of the following species would be expected to have chemical properties most similar to those of the nitrogen atom?
A. nitrite ion
B. phosphate ion
C. phosphide ion
D. nitride ion
E. phosphorus atom
3.
Which of the following statements is true concerning a concentrated solution of lithium oxide in water?
A. The resulting solution is strongly basic.
B. The resulting solution is weakly basic.
C. The resulting solution is weakly acidic.
D. The resulting solution is neither acidic nor basic.
E. The resulting solution is strongly acidic.
4.
An atom of which of the following elements has the largest second ionization energy?
A. Si
B. S
C. Na
D. Mg
E. Cl
5.
An atom of which of the following elements has the smallest first ionization energy?
A. S
B. Na
C. P
D. Si
E. Cl
6.
A section of the periodic table with all identification features removed is shown below.
V W X Y ZWhich element has the smallest atomic radius?
A. Z
B. V
C. W
D. Y
E. X
7.Which of the following atoms is diamagnetic in its ground state?
A. C
B. Cl
C. Ar
D. B
E. O
8.
The quantum numbers of an atom's highest-energy valence electrons are n=5 and l=1. The element to which this atom belongs could be a
A. inner transition metal.
B. p-block main-group element.
C. transition metal.
D. alkali metal.
E. s-block main-group element.
9.
Two elements that have the same ground-state valence shell configuration of ns2np2 are
A. K and Mg
B. Mg and Ca
C. Ge and Pb
D. Al and Ga
E. O and Se
10.
Which of the following have 10 electrons in d orbitals?
A. Fe
B. Mn
C. Two of the above
D. Cu
E. Zn
11.
Which of the following statements is true concerning the electron configuration [Kr]5p2?
A. This configuration cannot be the ground-state electron configuration for a Sr atom because it violates the Aufbau principle.
B. This configuration cannot be the ground-state electron configuration for a Sr atom because it violates the Heisenberg uncertainy principle.
C. This configuration cannot be the ground-state electron configuration for a Sr atom because it violates the Paul exclusion principle.
D. This configuration cannot be the ground-state electron configuration for a Sr atom because it violates Hund's rule.
E. This configuration is the ground-state electron configuration for a Sr atom.
12.
All of the following ground-state electron configurations are correct except
A. V: [Ar]4s24d3
B. Cr: [Ar]3d54s1
C. Sn: [Kr]4d105s25p2
D. Te: [Kr]4d105s25p4
E. K: [Ar]4s1
Explanation / Answer
Ans 1
Option D is the correct answer
Sodium and potassium have similar chemical and physical properties. This is best explained by the fact that both have the same ground-state valence-electron configuration.
Both forms +1 ions and have same number of valence electrons
Both are alkali metals of the same group 1.
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