Which one of the following is a combustion reaction? a. ch4 + 2 o2 co2 + 2 h2o b. hbr + naoh nabr + h2o c. xe (aq) + h2o(l) hxe(aq) + oh- (aq) d. nacl (aq) + agno3 (aq) nano3 (aq) + agcl (s)

Astudent made the lewis dot diagram of a compound as shown. mg is written with two dots shown on its top. an o is written on each side of mg. each o has six dots around it. an arrow is shown from one dot on mg toward the vacant space around the o on the right. another arrow is shown from the other dot on mg toward the vacant space around the o on the left. the title of the art is students lewis dot model. what is the error in the lewis dot diagram? an o atom should transfer all its six electrons to mg because the formula is mgo. both electrons of mg should be transferred to one o atom because the formula is mgo. the electrons should be transferred from each o atom to mg because mg has fewer electrons. the number of dots around mg should be four because it has to transfer two electrons to each o.