Bioluminescence is a chemical reaction that takes place in a living organism when the organism emits light. Bioluminescence doesn't consume or produce heat, hence it can be neither endothermic nor exothermic reaction. It emits a heatless light not heat.
For bioluminescence, it could be said that it is an exoenergetic reaction because it uses energy from a chemical reaction to produce light.
Every atom tends to form configuration of noble gas , with the 8 electrons in valence shell.
Answer: This is an oxidation-reduction (redox) reaction:
3 C-II - 12 e- → 3 CII (oxidation)
4 CrVI + 12 e- → 4 CrIII (reduction)
C2H5OH is a reducing agent, K2Cr2O7 is an oxidizing agent.
You can't draw on here but if you are looking for the molecular shape of CO2 it is linear. The central atom (C) is bonded to two atoms and has no lone pairs. It has a bond angle of 180 degrees and a hybridization of sp.
