An atom of sodium has an atomic number of 11 and a mass number of 23. Which of the following statements is correct?

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

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

In one or two grammatically correct sentences, write a definition for the term molecule geometry