During an experiment, solid iodine was placed in a sealed container. the container was gradually heated and purple-colored vapors of iodine formed were observed.
describe this system when it reaches phase equilibrium.

answer; ///i do believe that the correct answer is (b); ///particle composed of two or more atoms bonded together;

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of carbon is as shown here in the image.

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.