Two Isotopes of Chlorine Are Found in Nature,Cl-35 and Cl-37

Multiple Choice

Two isotopes of chlorine are found in nature,Cl-35 and Cl-37.The average mass of chlorine is 35.45 amu.The more abundant isotope of Cl has

A) 17 protons,17 electrons,and 18 neutrons.
B) 17 protons,17 electrons,and 18.45 neutrons.
C) 17 protons,17 electrons,and 20 neutrons.
D) 18 protons,18 electrons,and 17 neutrons.
E) 19 protons,19 electrons,and 16 neutrons.