Put the following elements into 5 pairs of elements that have similar chemical reactivity : F, Sr, P,Ca, O,Br, Rb, Sb, Li, S please help I'm failing

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

Identify the electromagnets with poles that are reversed from the electromagnet shown above

At the current rate, a graph of carbon dioxide produced by fossil fuels over time would slope upward slope downward be horizontal be vertical