I need to know the number of shared electron pairs in the central atom, and the number of lone pairs in these following compounds: COF2, CI2, CF2H2, Ba2N2, CO2, OF2. I really need the answers, I will give points if possible

How many liters of ethylene glycol antifreeze (c2h6o2), with a density of 1.100 g/l, would you add to your car radiator containing 15.0 kg of water if you needed to protect your engine to - 21.5°c? for water, kf = 1.86°c m -1.