Question

1) the tendency of an element to react is closely related to...
A)its atomic mass
B)attractions between its atomic atoms.
C)the number of valence electrons in atoms of the element.
D)the ratio of protons to neutrons in atoms of the element.
2)among the alkali metals, the tendency to react with other substances...
A)does not vary among the members of the group.
B)increases from top to bottom within the group.
C)varies in an unpredictable way within the group.
D)decreases from top to bottom within the group.