HELPP PLSSS 8. Which of the following determines the identity of an atom? *
O A. Protons
B. Electrons
O C. Neutrons
O D. All of the above
.

Why are the trends and exceptions to the trends in ionization energy observed?

What are the similarities of physical and chemical change ?

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy