What is the total E associated with one mole of photons (a unit known as the Einstein) of 3.91x1019 Hz?

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

Which substances have the lowest melting points: ionic covalent, or metallic

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity