Cesio es metal o no metal?

Si

Explanation:

Es un METAL ALCALINO

Explanation:

Elemento químico de número atómico 55, masa atómica 132,91 y símbolo Cs ; es un metal alcalino de color blanco plateado y blando, que se extrae de algunos minerales, se inflama en contacto con el aire, se utiliza en las células fotoeléctricas y sus isótopos radiactivos se emplean en investigaciones medicinales e industriales.

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.