What can you conclude about the classification of krypton?

Krypton is considered to be non-toxic.

Characteristics: Krypton is a colorless, odorless, inert gas. Although it is extremely unreactive krypton can react with the very reactive gas fluorine.

Classification: Krypton is a noble gas

State: gas

Atomic weight: 83.80

Electron shells: 2,8,18,8

Toxic to Superman

Hope this helps :)

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.