How many protons does an atom of potassium have?
Group of answer choices
20
K
19
39.028
An atom of potassium has 19 protons.
To determine the number of protons in an atom of an element, we can look at its atomic number on the periodic table. In this case, we are talking about potassium (K).
Step 1: Look up the element on the periodic table.
Step 2: Locate the atomic number of potassium (K).
Step 3: The atomic number of an element represents the number of protons in its nucleus.
In this case, the atomic number of potassium (K) is 19. Therefore, an atom of potassium has 19 protons.
So, the correct answer is 19.