Why of the following compounds would be expected to have the strongest ionic bond

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit

Amixture initially contains a, b, and c in the following concentrations: [a] = 0.300 m , [b] = 1.05 m , and [c] = 0.550 m . the following reaction occurs and equilibrium is established: a+2b⇌c at equilibrium, [a] = 0.140 m and [c] = 0.710 m . calculate the value of the equilibrium constant, kc.