Group 1 and group 17 reactivity trends

Which pair of elements reacts together most vigorously? A. Sodium and bromine B. Potassium and bromine C. Sodium and chlorine D. Potassium and chlorine

Which pair of elements would react together most vigorously? A. $\ce{Na(s)}$ and $\ce{I2(s)}$ B. $\ce{Cs(s)}$ and $\ce{I2(s)}$ C. $\ce{Na(s)}$ and $\ce{F2(g)}$ D. $\ce{Cs(s)}$ and $\ce{F2(g)}$

Which statement is correct for the group 17 elements from chlorine to iodine? A. The first ionization energy of the elements decreases. B. The elements become stronger oxidizing agents. C. The elements become more volatile. D. The radius of the halide ion…

A computer simulation models what happens when small pieces of lithium and of sodium are dropped into water. For each metal five pieces of increasing mass are used, the same set of masses for both metals, and the simulation records how long each piece takes to…