Characterize EACH of the following statements as being TRUE or FALSE and then indicate the collective true-false status using the choices provided. (1) All naturally occurring atoms of an element must have the same mass number.
(2) Protons and electrons carry the same amount of charge.
(3) An isotope of chlorine with A = 35 and Z = 17 contains more neutrons than protons.
A) All three statements are true.
B) Two of the three statements are true.
C) Only one of the statements is true.
D) None of the statements is true.

Question

Quizplus · Accepted Answer

Statement (1) is false because isotopes of an element have different mass numbers due to variation in the number of neutrons. Statement (2) is false because protons carry a positive charge while electrons carry a negative charge of equal magnitude. Statement (3) is true because the number of neutrons (18) is greater than the number of protons (17) in the isotope described. Hence, two out of three statements are false, and the correct choice is B.

Characterize EACH of the Following Statements as Being TRUE or FALSE