1. What is the total number of valence
electrons in an atom with the electron
configuration 1s2 2s2 2p6 3s2 3p3?
A. 6
B. 2
C. 3
D. 5

Which statement explains which component is likely to be more powerful in explaining a scientific phenomenon? a) component c, because a theory is often passed on possibility and not certainty b) component d, because a hypothesis is often based on possibility not certainty c) component c, because the ability to explain several occurrences in the natural world is a characteristic of a hypothesis d) component d, because the ability to explain several occurrences in the natural world is a characteristic of a theory