Exam 2: The Chemical Context of Life

The mass number of an element can be easily approximated by adding together the number of __________ in an atom of that element.

Use the information extracted from the periodic table in Figure 2.2 to answer the following questions. -Based on electron configuration, which of these elements would exhibit chemical behavior most like that of oxygen?

Refer to the following figure to answer the following questions. -Which one of the atoms shown would be most likely to form a cation with a charge of +1?