10. Periodic Properties of the Elements

Which of the following best describes the outermost energy level of a hydrogen atom?

The reactivity of an element can often be determined by examining the element's:

How many unpaired electrons are present in the ground state of a neutral atom of a group 4A (14) element, such as carbon (C)?

For a neutral manganese (Mn) atom, how many electrons occupy the s and p orbitals in its ground-state electron configuration?

Which of the following atoms has six valence electrons?

How many valence electrons does a neutral atom of gold (Au) have?

How many valence electrons does a chlorine (Cl) atom have?

In an atom, where are the electrons that are primarily involved in chemical bonding located?

How many valence electrons do barium and phosphorus have, respectively?

How many electrons are present in the third energy level (n = 3) of a neutral silicon (Si) atom?

How many valence electrons does an atom of sulfur have?

How many valence electrons does an aluminum (Al) atom have?

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

How does the number of valence electrons in an atom influence its chemical reactivity?

How many valence electrons does indium (In) have?