Question
Question 1
PART A
Chlorine is the atomic number 17 in the periodic table of elements. What information does the atomic number give you about the element chlorine?
Responses
A An atom of chlorine has 17 protons
and neutrons
combined.An atom of chlorine has 17 protons + and neutrons - combined.
B An atom of chlorine has 17 protons
.An atom of chlorine has 17 protons + .
C An atom of chlorine has 17 protons
and 17 neutrons
.An atom of chlorine has 17 protons + and 17 neutrons + .
D Chlorine atoms have 17 of each of the three subatomic particles, protons, neutrons, and electrons.Chlorine atoms have 17 of each of the three subatomic particles, protons, neutrons, and electrons.
Question 2
PART B
Consider the information you have about the element chlorine in Part A. Based on that knowledge, which of these statements is NOT true concerning the atomic structure of aluminum?
Responses
A Aluminum has 13 neutrons.Aluminum has 13 neutrons.
B Aluminum has an atomic number of 13Aluminum has an atomic number of 13
C Aluminum has 13 protons
in the nucleus.Aluminum has 13 protons + in the nucleus.
D The number of protons equals the number of electrons.
Answers
GPT-4o mini
**Question 1 PART A**
The correct response is:
**B**: An atom of chlorine has 17 protons.
- The atomic number of an element indicates the number of protons in the nucleus of its atoms. Chlorine has an atomic number of 17, which means it has 17 protons. It does not directly specify the number of neutrons or electrons.
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**Question 2 PART B**
The statement that is NOT true concerning the atomic structure of aluminum is:
**A**: Aluminum has 13 neutrons.
- Aluminum has an atomic number of 13, which means it has 13 protons. The most common isotope of aluminum (Al-27) has 14 neutrons (27 - 13 = 14). Therefore, saying aluminum has 13 neutrons is incorrect.
The other statements are true:
- **B**: Aluminum does have an atomic number of 13.
- **C**: Aluminum has 13 protons in the nucleus.
- **D**: In neutral aluminum atoms, the number of protons equals the number of electrons, so this statement is true as well.
The correct response is:
**B**: An atom of chlorine has 17 protons.
- The atomic number of an element indicates the number of protons in the nucleus of its atoms. Chlorine has an atomic number of 17, which means it has 17 protons. It does not directly specify the number of neutrons or electrons.
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**Question 2 PART B**
The statement that is NOT true concerning the atomic structure of aluminum is:
**A**: Aluminum has 13 neutrons.
- Aluminum has an atomic number of 13, which means it has 13 protons. The most common isotope of aluminum (Al-27) has 14 neutrons (27 - 13 = 14). Therefore, saying aluminum has 13 neutrons is incorrect.
The other statements are true:
- **B**: Aluminum does have an atomic number of 13.
- **C**: Aluminum has 13 protons in the nucleus.
- **D**: In neutral aluminum atoms, the number of protons equals the number of electrons, so this statement is true as well.