Characterize EACH of the following statements as being TRUE or FALSE and then indicate the collective true-false status using the choices provided. (1) The mass of an atom and the mass of its nucleus are essentially the same.
(2) Two of the six electrons present in an atom of carbon are unpaired.
(3) The element aluminum is located in the d area of the periodic table.
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

(1) False - The mass of an atom includes the mass of its nucleus and the mass of its electrons. Since the electrons have such a small mass compared to the nucleus, the mass of an atom is dominated by the mass of its nucleus. 
(2) True - Carbon has four valence electrons, of which two are unpaired. 
(3) False - Aluminum is located in the p area of the periodic table.

Characterize EACH of the Following Statements as Being TRUE or FALSE