Part a add single electrons and/or electron pairs as needed to complete the electron-dot symbol for astatine, at. to return the atom to its original state, use the reset button. click to select an electron-pair or single electron, then click on the element symbol to add electrons. click the reset button to clear all electrons and start over. view available hint(s) aannn

a:

by the combination of an unlimited number of elements

the correct answer would be d. hope this !

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.