Krupton (Kr) is a

A. Gas
B. Metal
C. Non of these
D. Metalloid​

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

ugh fiel iente of insistí is did kiwis jaj

a corroding iron, if that's one of your choices