AP Chemistry Review 1.4 and 1.5

Front

What type of force exists between two protons?

Back

A repulsive force.

Front

What is the electron configuration for an atom with the lowest first ionization energy?

Back

1s² 2s² 2p⁶ 3s¹.

Front

Which noble gas has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶?

Back

Argon.

Front

What is the correct electron configuration for Krypton (Kr)?

Back

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶.

Front

What happens to two positive charges placed near each other?

Back

They will repel.

Front

What is the definition of ionization energy?

Back

The energy required to remove an electron from an atom or ion.

Front

What is the significance of electron configurations in chemistry?

Back

They describe the distribution of electrons in an atom's orbitals, influencing chemical properties and reactivity.

Front

How does the electron configuration relate to the periodic table?

Back

The electron configuration determines an element's position in the periodic table and its chemical behavior.

Front

What is the general trend of ionization energy across a period in the periodic table?

Back

Ionization energy generally increases across a period from left to right.

Front

What is the general trend of ionization energy down a group in the periodic table?

Back

Ionization energy generally decreases down a group.