QQuestionChemistry
QuestionChemistry
Part 2: Determine the number of protons, electrons, and neutrons present in an atom of potassium (K). Explain how you determined your answer using complete sentences.
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:I'll solve this problem step by step, following the specified LaTeX formatting guidelines:
Step 2:: Identify the Element
Potassium (K) is an element with an atomic number and mass number that can be found on the periodic table.
Step 3:: Determine the Atomic Number
The atomic number of potassium is 19. This means: - Number of protons = 19 - Number of electrons in a neutral atom = 19
Step 4:: Find the Mass Number
Potassium's most common isotope is $$^{39}_{19}K
- The mass number is 39
Step 5:: Calculate the Number of Neutrons
39 - 19 = 20$$ neutrons
Number of neutrons = Mass number - Atomic number
Step 6:: Verify the Calculation
- Protons: 19 - Electrons: 19 (in a neutral atom) - Neutrons: 20
Final Answer
In a neutral atom of potassium (K): - Protons: 19 - Electrons: 19 - Neutrons: 20 Explanation: The number of protons is determined by the atomic number (19), which also equals the number of electrons in a neutral atom. The number of neutrons is calculated by subtracting the atomic number from the mass number of the most common isotope (39 - 19 = 20).
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