The atomic number of potassium is 19. how many electrons does this element have?
A) 9 electrons
B) 18 electrons
C) 19 electrons
D) 20 electrons
Correct Answer:
C) 19 electrons
Explanation:
The atomic number of an element indicates the number of protons and electrons in its atom. In the case of potassium (K), which has an atomic number of 19, it has 19 electrons to balance the 19 protons in its nucleus. Options A, B, and D represent incorrect numbers of electrons for potassium.
