How many valence electrons does magnesium (Mg) have?

How many valence electrons does a silicon (Si) atom have?

Which part of an atom determines how it will react with other atoms?

Which of the following elements can have expanded octets in their compounds?

Which term refers to the outermost electrons of an atom?

Which statement best describes the relationship between the number of valence electrons in an element and its chemical activity?

How many valence electrons does a sodium (Na) atom have?

What is the name given to the electrons in the highest occupied energy level of an atom?