10. Periodic Properties of the Elements

What is the total number of outer (valence) electrons present in a molecule of sulfur dioxide (SO_2)?

Which of the following elements has two unpaired electrons in its ground-state electron configuration?

How many valence electrons does gallium (Ga) have?

How many valence electrons does potassium (K) have?

Which of the following represents the number of valence electrons in an atom of aluminum (Al)?

How many valence electrons are present in the outermost shell of a neutral atom with 15 electrons?

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

How many valence electrons does a boron (B) atom have?

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

How many additional electrons does a sulfur atom need to achieve a stable (octet) electron configuration?

Which of the following is found in the outermost shell (energy level) of an atom?

How many valence electrons does aluminum (Al) have available for bonding?

Which of the following is a likely predictor of how many covalent bonds an atom can form?

In order to obtain a stable outer shell of electrons, carbon forms four:

How many electrons does a Mn atom have in its 3d subshell?