Question

how many protons are found in k - 40? 19 40 0 21 none of the above submit request answer

Explanation:

The symbol \( K \) represents potassium. The atomic number of potassium is \( 19 \). The number of protons in an atom is equal to its atomic number. So, for \( K - 40 \) (where \( 40 \) is the mass number, mass number = protons + neutrons), the number of protons is \( 19 \).

Answer:

19