How many neutrons are in potassium (K)?
Understand the Problem
The question is asking for the number of neutrons in the element potassium, represented by the symbol 'K'. To find the number of neutrons, one typically subtracts the atomic number (the number of protons) from the atomic mass (rounded to the nearest whole number). For potassium, the atomic number is 19, and the atomic mass is approximately 39. This calculation will yield the number of neutrons.
Answer
20
The final answer is 20
Answer for screen readers
The final answer is 20
More Information
Typically, a potassium atom with an atomic mass of 39 has 20 neutrons. The number of neutrons is calculated by subtracting the number of protons from the atomic mass.
Tips
A common mistake is confusing the atomic mass with the number of neutrons. Always subtract the atomic number (protons) from the atomic mass to find the neutrons.
Sources
- Periodic Table: Potassium - hobart.k12.in.us
- Electronic configuration of Potassium atom - Mass number - BYJU'S - byjus.com
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