Question 1
Choose the statement that is TRUE.
◦ Core electrons effectively shield outer electrons from nuclear charge.
◦ Core electrons are the easiest of all electrons to remove.
◦ Valence electrons are the most difficult of all electrons to remove.
◦ Outer electrons efficiently shield one another from nuclear charge.
Question 2
Identify the species that has the smallest radius.
◦ anion
◦ neutral
◦ cation
◦ water molecule