Unit 7: Atomic Structure and Periodic Trends

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

Which element is more electronegative, oxygen or sulfur?

Back

Oxygen, because it is to the right in the same period.

Front

What are the vertical columns in the Periodic Table called?

Back

Groups.

Front

What is the trend in atomic radius as you move from left to right across a period in the periodic table?

Back

It decreases.

Front

Which element has the largest atomic radius in Period 4?

Back

Potassium (K).

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout, such as saltwater.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the difference between a period and a group in the periodic table?

Back

A period is a horizontal row, while a group is a vertical column.

Front

What is the trend in ionization energy as you move down a group in the periodic table?

Back

Ionization energy generally decreases as you move down a group.

Front

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

Back

Electronegativity generally decreases as you move down a group.