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

Astudent made the lewis dot diagram of a compound shown. what is the error in the lewis dot diagram? a)an o atom should transfer all of its six electrons to mg because the formula is mgo b) both electrons of mg should be transferred to one o adam because the formula is mgo c) the electrons should be transferred from each o add him to capital mg because mg has fewer electrons d) the number of dots around mg should be four because it has to transfer two electrons to each o

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution? a. 3.88 m, b. 1.03 m, c. 1.5 m, d. 15.5 m

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.