Unit 3 Review

Front

What is the period and group of the element Phosphorus (P) with the electron configuration [Ne]3s²3p³?

Back

Period 3, Group 15.

Front

What is the trend for electronegativity as we go from left to right across the periodic table?

Back

Electronegativity generally increases.

Front

What are the extremely unreactive group 18 elements called?

Back

Noble gases.

Front

Which element is expected to have the greatest ionization energy?

Back

Oxygen.

Front

How many electrons are in the outermost energy level of group 1 elements?

Back

One electron.

Front

Define ionization energy.

Back

The energy required to remove an electron from an atom in the gas phase.

Front

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

Back

Atomic radius generally increases.

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals.

Front

What is the significance of the octet rule in chemistry?

Back

Atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.