What is the atomic number of potassium?
2
19
20
39
I know it's not 2 but other than that I'm not sure.
Have you ever heard of Google Search?
19, of course, and I recommend you download a periodic table.
To find the atomic number of potassium, we need to refer to the periodic table. The atomic number represents the number of protons in an atom's nucleus.
First, let's look at the options given: 2, 19, 20, and 39.
It's important to remember that each element has a unique atomic number. Potassium is an element with the symbol "K." In order to determine its atomic number, we need to find "K" on the periodic table.
Referencing the periodic table, we find that the atomic number of potassium (K) is 19. Therefore, the correct answer is 19.