10. Periodic Properties of the Elements

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?

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

For a nitrogen atom (atomic number 7), how many electrons are present in its outermost shell?

Why are only valence electrons, and not core electrons, typically involved in chemical bonding?

How many valence electrons does a fluorine atom have?

The chemical characteristics or reactivity of an element depend mostly on the __________.

Which of the following best describes an atom with five or more valence electrons?

Which of the following best describes valence electrons and their importance?