The oxide of an element has molar mass equal to 28. Find the total number of electrons in one molecule of the compound. (At. no. C = 6, 0 = 8).

Mass no. of C = 12, 0 = 16. Molar mass of compound = 28. So, oxide will be CO. At. no. of C = 6,O=8.In CO, no. of electrons in C = no. of protons in C = at. no. of C = 6.No. of electrons in O = no. of protons in O = at. no. of O = 8.∴ Total no. of electrons in CO= 6 + 8 = 14.