PLEASE HELP ME!! Identify which is the true statement about polar and nonpolar molecules. Explain why.

A. polar molecules always have nonpolar bonds.

B. Non polar molecules always have polar bonds.

C. Nonpolar molecules can have polar bonds.

D. Polar molecules never have polar bonds.

Which statement is true about ionic compounds?

Lewis structure and molecular geometry for nh2cl

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.