Kim described two subatomic particles below: particle p: has the least mass particle q: a more massive particle with a charge which of the following statements is correct based on the descriptions of each particle?
particle p repels particle q.
particle p attracts particle q.
particle p is a neutron and particle q is a proton.
particle p is a proton and particle q is an electron.

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.