Please help <3
20202020200202

Will mark brainliest how many electrons can be held in the energy level n = 4?

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next

#20 which type of bond is formed when bases pair in dna? ionic bond covalent bond coordinate bond hydrogen bond