For potassium (K), with an atomic number of 19 and an atomic mass of approximately 39.098, here are the relevant details:
- Atomic number: 19
- Atomic mass: ~39.098
- Number of protons: 19 (the atomic number equals the number of protons)
- Number of electrons: 19 (in a neutral atom, the number of electrons equals the number of protons)
- Number of neutrons: To find the number of neutrons, you can use the formula:
\[ \text{Number of neutrons} = \text{Atomic mass} - \text{Number of protons} \]
Since atomic mass is usually rounded to the nearest whole number, we'll use 39:
\[ \text{Number of neutrons} = 39 - 19 = 20 \]
In summary:
- Atomic number: 19
- Atomic mass: ~39.098
- Number of protons: 19
- Number of neutrons: 20
- Number of electrons: 19