A chlorine atom gains an electron. What is the resulting particle? A. An isotope with a positive charge
B. An ion with a negative charge
C. An isotope with no charge
D. An ion with a positive charge

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.