148. 7. A certain atom has the symbol ¹3 Px. What does this symbol tell about an atom of the element? (A) It has 148 electrons. (B) It has a valence of 4. It has 221 protons in the nucleus. Its atomic mass is 73 u. (E) 8. The atomic mass of an element is 32.07 u and its atomic number is 16. The number of protons contained in the nucleus of an atom of this element is (A) 16 (B) 31 (C) 32 (D) 48 9. The atomic mass of an element is 32.07 u and its atomic number is 16. The element forms a simple ion. The ion will most likely have a charge of (A) 1- (B) 2- (C) 3+ (D) 1+ 10. The nucleus of which atom contains seven neutrons? n = 2 n=3 8e 2e AtomA M = 24,Z = 12 Atom B M = 15,Z = 7 n=1 2e Atom D M=7,Z=3 n=1 2e n=1 Atom C M=17,Z=10 2e n=1 2e n = 1 2e Atom E M = 34,Z = 17 | (A) A (B) B n=2 5e n=2 8e n = 2 1e n=2 8e (C) n = 3 n=3 n = 3 n = 3 7e C (D) It has 75 neutrons in the nucleus. (D) D (E) E
148. 7. A certain atom has the symbol ¹3 Px. What does this symbol tell about an atom of the element? (A) It has 148 electrons. (B) It has a valence of 4. It has 221 protons in the nucleus. Its atomic mass is 73 u. (E) 8. The atomic mass of an element is 32.07 u and its atomic number is 16. The number of protons contained in the nucleus of an atom of this element is (A) 16 (B) 31 (C) 32 (D) 48 9. The atomic mass of an element is 32.07 u and its atomic number is 16. The element forms a simple ion. The ion will most likely have a charge of (A) 1- (B) 2- (C) 3+ (D) 1+ 10. The nucleus of which atom contains seven neutrons? n = 2 n=3 8e 2e AtomA M = 24,Z = 12 Atom B M = 15,Z = 7 n=1 2e Atom D M=7,Z=3 n=1 2e n=1 Atom C M=17,Z=10 2e n=1 2e n = 1 2e Atom E M = 34,Z = 17 | (A) A (B) B n=2 5e n=2 8e n = 2 1e n=2 8e (C) n = 3 n=3 n = 3 n = 3 7e C (D) It has 75 neutrons in the nucleus. (D) D (E) E
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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I need help on question 7-10? Could you help me finish those questions? And also can explain which opti correct?
![Acids & Bases:
1. All are examples of Lewis acid-base reactions except
(A)
Cu²+ (aq) + 4NH3(aq) [Cu(NH3)4]²+ (aq)
(B)
HCl(g) + NH3(g) → NH4Cl(s)
(C)
H+ (aq) + OH (aq) → H₂O(1)
(D)
2Na(s) + Cl₂(g) → 2NaCl(s)
2. According to the Lewis definition, an acid is a species
having a hydrogen ion.
(A)
(B)
(C)
accepting a pair of electrons. (D)
3. All are potential Lewis bases except
(A) NH, (B) H₂O (C) CH4
(D) CN-
4. Which hydrated metal ion is most acidic under conditions of equal molar concentration in water?
(A) A13+ (B) Ba2+ (C) K+ (D) Zn²+ (E)
Ag+
5. Which element in Group 5A forms the most basic oxide?
(A) N (B) P
Atomic Structure:
6. In what respect does an atom of magnesium differ from a magnesium ion (Mg2+)?
(A)The ion has a more stable electronic arrangement than the atom.
(B)The positive charge on the nucleus of the ion is two units greater than the nuclear charge on the atom.
(C)The ion has two more protons than the atom.
(D)The ion will react more readily with free Cl₂.
(E)The ion has two more planetary electrons than the atom.
It has 221 protons in the nucleus.
Its atomic mass is 73 u.
7. A certain atom has the symbol 73 Px. What does this symbol tell about an atom of the element?
It has 148 electrons.
(A)
(B) It has a valence of 4.
(C)
(E)
Atom A
M = 24,Z = 12
8. The atomic mass of an element is 32.07 u and its atomic number is 16. The number of protons
contained in the nucleus of an atom of this element is
(A) 16 (B) 31 (C) 32 (D) 48
10. The nucleus of which atom contains seven neutrons?
Atom B
M = 15,Z = 7
9. The atomic mass of an element is 32.07 u and its atomic number is 16. The element forms a simple
ion. The ion will most likely have a charge of
(A) 1-
(B) 2-
(C) 3+ (D) 1+
Atom C
M = 17,Z = 10
Atom D
M = 7, Z=3
Atom E
M = 34,Z = 17
(A) A
n=1
2e
n = 1
2e
n=1
2e
(C) As (D) Sb (E) Bi
n=1
2e
(B)
n = 1
2e
B
n = 2
8e
n = 2
5e
n = 2
8e
n = 2
1e
n = 2
8e
accepting a hydrogen ion.
(C)
donating a pair of electrons.
n = 3
2e
n = 3
n = 3
n = 3
n = 3
7e
C
(D) It has 75 neutrons in the nucleus.
(D)
Ꭰ
(E)
E](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdb95e059-8064-4379-9fc8-59ee0fd6d74c%2F7ac9d0b8-46b1-4b92-92e2-02f7bf47f2d7%2Fdbou52d_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Acids & Bases:
1. All are examples of Lewis acid-base reactions except
(A)
Cu²+ (aq) + 4NH3(aq) [Cu(NH3)4]²+ (aq)
(B)
HCl(g) + NH3(g) → NH4Cl(s)
(C)
H+ (aq) + OH (aq) → H₂O(1)
(D)
2Na(s) + Cl₂(g) → 2NaCl(s)
2. According to the Lewis definition, an acid is a species
having a hydrogen ion.
(A)
(B)
(C)
accepting a pair of electrons. (D)
3. All are potential Lewis bases except
(A) NH, (B) H₂O (C) CH4
(D) CN-
4. Which hydrated metal ion is most acidic under conditions of equal molar concentration in water?
(A) A13+ (B) Ba2+ (C) K+ (D) Zn²+ (E)
Ag+
5. Which element in Group 5A forms the most basic oxide?
(A) N (B) P
Atomic Structure:
6. In what respect does an atom of magnesium differ from a magnesium ion (Mg2+)?
(A)The ion has a more stable electronic arrangement than the atom.
(B)The positive charge on the nucleus of the ion is two units greater than the nuclear charge on the atom.
(C)The ion has two more protons than the atom.
(D)The ion will react more readily with free Cl₂.
(E)The ion has two more planetary electrons than the atom.
It has 221 protons in the nucleus.
Its atomic mass is 73 u.
7. A certain atom has the symbol 73 Px. What does this symbol tell about an atom of the element?
It has 148 electrons.
(A)
(B) It has a valence of 4.
(C)
(E)
Atom A
M = 24,Z = 12
8. The atomic mass of an element is 32.07 u and its atomic number is 16. The number of protons
contained in the nucleus of an atom of this element is
(A) 16 (B) 31 (C) 32 (D) 48
10. The nucleus of which atom contains seven neutrons?
Atom B
M = 15,Z = 7
9. The atomic mass of an element is 32.07 u and its atomic number is 16. The element forms a simple
ion. The ion will most likely have a charge of
(A) 1-
(B) 2-
(C) 3+ (D) 1+
Atom C
M = 17,Z = 10
Atom D
M = 7, Z=3
Atom E
M = 34,Z = 17
(A) A
n=1
2e
n = 1
2e
n=1
2e
(C) As (D) Sb (E) Bi
n=1
2e
(B)
n = 1
2e
B
n = 2
8e
n = 2
5e
n = 2
8e
n = 2
1e
n = 2
8e
accepting a hydrogen ion.
(C)
donating a pair of electrons.
n = 3
2e
n = 3
n = 3
n = 3
n = 3
7e
C
(D) It has 75 neutrons in the nucleus.
(D)
Ꭰ
(E)
E
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