If an isotope of an element has 27 neutrons and a mass number of 52 , how many electrons must it have?

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?