Mendeleev organized the chemical elements based on their

• symbols.
• properties.
• atomic numbers.
• charges.

A horizontal row in the periodic table is called a(n)

• family.
• group.
• octet.
• period.

An element with the general electron configuration ns2 np1 for its outermost electrons would be in Group

• 2.
• 13.
• 14.
• 15.

All the alkali metal elements are found on the periodic table in

• Group 1.
• Group 2.
• Period 1.
• Period 2.

When a carbon atom is in its ground state, how many electrons does it have in its outermost shell?

• 1
• 2
• 3
• 4

Which of the following elements is most similar in behavior to calcium?

• magnesium
• sodium
• sulfur
• chlorine

Which of the following elements is a transition metal?

• calcium
• iron
• sodium
• sulfur

Which of the following elements is not a metal?

• H
• K
• Na
• Fr

Which of the following elements has the greatest atomic radius?

• Al
• S
• Si
• C

Which of the following elements has the lowest electronegativity?

• C
• F
• Li
• O