Chemistry Periodic Table Trends Unit 2

The following electron dot diagram belongs to which group on the periodic table?

• 1

• 5

• 15

In the Lewis structure for PH₃, how many lone pairs of electrons are located on the central atom?

• 1

• 2

• 4

Which element is a halogen and found in Period 3?

• Na

• Cl

• Ne

Which of the following statements must be true for a diatomic element with a high first ionization energy?

I. It is a metal.

II. It is a nonmetal.

III. It has a high electronegativity.

IV. It has a low electronegativity.

• I only

• II only

• II and III

• III and IV

All of the following are alkali metals except...

• H

• Li

• Na

Based on what you know about changes in matter, explain why the diagram shows a physical change rather than a chemical change.

• The particles get smaller

• The volume of the matter decreases

• The composition of the matter stays the same.

Which of the following Lewis dot diagrams could represent a noble gas?

• I only

• III only

• I and III

Which diagram best represents group and period trends in atomic radius?

• 
• 
• 
• 

If equal masses of the listed metals were collected, which would have the greatest volume?

• Aluminum

• Zinc

• Copper

Arrange the following elements in order of increasing electronegativity.

N, O, P

• N,O,P

• O, P, N

• P,N,O