Chapter 5 Lesson 3- Periodic Trends

Multiple Choice

Which of the following is NOT one of the four properties discussed in the lesson?

• Atomic Radius

• Ionic Radius

• Ionization Energy

• Melting Point

Fill in the Blanks

For metals, atomic radius is defined as half the distance between adjacent

in a crystal.

Multiple Select

Select all correct statements about how atomic radius is calculated for different types of elements.

• For metals, it is half the distance between adjacent nuclei in a crystal.

• For nonmetals, it is half the distance between nuclei of bonded atoms.

• For all elements, it is the same method regardless of type.

• Atomic radius is not measurable for nonmetals.

Multiple Choice

According to the periodic table trends, what happens to atomic radius as you move from left to right across a period?

• It decreases

• It increases

• It stays the same

• It fluctuates unpredictably

Multiple Choice

What is the trend in atomic radius as you move down a group in the periodic table?

• It increases

• It decreases

• It stays the same

• It first increases then decreases

Multiple Choice

According to the octet rule, why do atoms tend to gain, lose, or share electrons?

• To acquire a full set of eight valence electrons

• To become heavier

• To increase their atomic number

• To become radioactive

Fill in the Blanks

The radius of a sodium ion (Na+) is

than the radius of a sodium atom (Na).

Multiple Select

Which of the following statements are correct regarding the formation of ions and their radii?

• Losing an electron results in a positive charge and a smaller radius

• Gaining an electron results in a negative charge and a larger radius

• Losing an electron results in a negative charge and a larger radius

• Gaining an electron results in a positive charge and a smaller radius

Multiple Choice

What trend is observed in ionic radius as you move across a period and ions become more positive?

• The radius increases

• The radius decreases

• The radius stays the same

• The radius fluctuates randomly

Multiple Choice

Which of the following statements best describes the trend of ionic radius in a group of the periodic table?

• Ionic radius generally increases from top to bottom in a group.

• Ionic radius generally decreases from top to bottom in a group.

• Ionic radius remains constant in a group.

• Ionic radius increases from left to right in a period.

Fill in the Blanks

The energy required to remove an electron from a gaseous atom is called

.

Multiple Choice

Which of the following best describes the trend of first ionization energy across a period in the periodic table?

• It generally increases from left to right.

• It generally decreases from left to right.

• It remains constant across a period.

• It increases from top to bottom.

Multiple Choice

Based on the periodic table shown, which element has the highest electronegativity value?

• Fluorine

• Oxygen

• Chlorine

• Nitrogen