What other product occurs when ac-222 releases an alpha particle?

What element breaks down into yttrium-90?

Is a pencil falling to the floor anon contact force, a force, or a contact force

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.