Atoms of elements at the top of a group on the periodic table are smaller than the atoms of elements at the bottom of the group. How does this help explain the difference in the reactivity of metals within a group?

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Which of the following statements about acidic water is true? a. acid has no effect on the h, o molecules. b. the solution contains a larger number of oh ions than h, o ions. c. the solution contains a larger number of h, o ions than qh ions. d. the solution contains an equal number of h, o ions and oh ions. none of the above e.