The correct global electron configuration of the anion 9 F -1 corresponds to: A) 1s 2 2s 2 3p 6 B) 1s 2 2s 2 2p 6 C) 1s 2 2s 3 2p 5 D) 1s 1 2p 6 3p 2

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.