Unit 4 Review - Chemistry

Front

What is the electron configuration for Phosphorus (P)?

Back

1s2 2s2 2p6 3s2 3p3

Front

What does the Pauli Exclusion Principle state?

Back

Electrons are paired based on their spin directions, clockwise and counterclockwise.

Front

Which nonmetal is the most reactive?

Back

Fluorine

Front

Identify the element with the following electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6.

Back

Krypton

Front

What element has the following electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5?

Back

Bromine (Br)

Front

What is the Aufbau Principle?

Back

Electrons occupy the lowest energy orbitals first before filling higher energy levels.

Front

What is Hund’s Rule?

Back

Electrons will fill degenerate orbitals singly before pairing up.

Front

What is the maximum number of electrons that can occupy a single orbital?

Back

2 electrons.

Front

What is the significance of the atomic number?

Back

It represents the number of protons in an atom's nucleus and defines the element.

Front

What is an ion?

Back

An atom or molecule that has gained or lost one or more electrons, resulting in a net charge.