determine the number of protons, neutrons and electrons in potassium 19 k 39.098 p⁺____ n°____ e⁻____
determine the number of protons, neutrons and electrons in potassium 19 k 39.098 p⁺____ n°____ e⁻____
Answer
Explanation:
Step1: Determine number of protons
The atomic number is 19, so number of protons $p^{+}=19$.
Step2: Determine number of neutrons
Atomic mass is approximately 39.098. Rounding to 39. Neutrons $n^{0}=39 - 19=20$.
Step3: Determine number of electrons
For a neutral atom, number of electrons equals number of protons. So $e^{-}=19$.
Answer:
$p^{+}:19$, $n^{0}:20$, $e^{-}:19$