Los elementos tienden a completar___ electrones en su última capa.

1. list three scientific reasons cockroaches may fly.

What will most likely happen when two bromine atoms bond together?

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.