which element has an atomic number of 19?\ncalcium\npotassium\nsodium
which element has an atomic number of 19?\ncalcium\npotassium\nsodium
Answer
Brief Explanations:
The atomic number is the number of protons in an atom's nucleus and is unique to each element. Potassium has an atomic number of 19. Calcium has an atomic number of 20 and sodium has an atomic number of 11.
Answer:
Potassium