The ayoms of element x contain nineteen electrons. With which of the following elements will the chemistry of x be similar?

Newtons second law deals most cosely with

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.

How can the periodic table be used to predict the behavior of elements?