Four elements-chlorine (Cl), potassium (K), argon (Ar), and radium (Ra) according to the periodic table which of these elements has atoms with the most valence electrons?
Answer: Argon (Ar) has the most valence electrons.
Explanation: Remember, valence electrons are the electrons in the outer most shell in the electron orbits. Argon has 8 on total. While potassium (K) has 1, chlorine (Cl) has 7, and radium (Ra) has 2.
