QQuestionChemistry
QuestionChemistry
How many electrons, protons, and neutrons are there in a Cl⁻ ion?
A. 18, 17, 18
B. 18, 17, 17
C. 16, 17, 18
D. 17, 18, 18
12 months agoReport content
Answer
Full Solution Locked
Sign in to view the complete step-by-step solution and unlock all study resources.
Step 1:Let's solve this step by step:
Step 2:: Determine the atomic number of Chlorine
- Chlorine's atomic number is 17, which means a neutral chlorine atom has 17 protons - The atomic number is always equal to the number of protons in an atom
Step 3:: Determine the number of electrons in a Cl⁻ ion
- The ⁻ (minus) sign indicates the ion has gained one electron - So, a Cl⁻ ion will have 17 + 1 = 18 electrons - This is different from the neutral atom, which has 17 electrons
Step 4:: Determine the number of neutrons
- $$35 - 17 = 18$$ neutrons
- The mass number of chlorine is typically 35 or 37 - Let's use the most common isotope with mass number 35 - Number of neutrons = Mass number - Atomic number
Step 5:: Summarize the findings
- Protons: 17 - Electrons: 18 - Neutrons: 18
Final Answer
The correct answer is A. 18, 17, 18.
Need Help with Homework?
Stuck on a difficult problem? We've got you covered:
- Post your question or upload an image
- Get instant step-by-step solutions
- Learn from our AI and community of students