10. Periodic Properties of the Elements

Where are the valence electrons located in an atom?

What is the total number of outer (valence) electrons present in a molecule of carbon dioxide (CO_2)?

How many valence electrons does the element phosphorus (P) have?

How many p electrons are present in a neutral atom of selenium (Se)?

Why is the configuration of electrons in an atom's outer shell important?

How many valence electrons does lithium (Li) have?

Which type of electrons are located in the outermost energy level of the electron cloud and possess the most energy?

Which metalloid has three valence electrons?

How many valence electrons does a bromine (Br) atom have?

How many valence electrons are present in a neutral atom of chlorine?

How many valence electrons does phosphorus (P) have?

Which of the following elements can accommodate more than eight electrons in its valence shell?

Which of the following is the best method to determine the number of valence electrons for a main-group element using the periodic table?

How many valence electrons are shown in the Lewis structure for a chlorine atom?

How many valence electrons does gallium (Ga) have?