Chem II Unit 1 Review

Front

What creates emission spectra (bright line spectra)?

Back

Emission spectra are created when electrons move from higher to lower energy levels.

Front

What is electronegativity?

Back

Electronegativity is the ability of an atom to attract/accept electrons.

Front

What does Hund's rule state?

Back

Hund's rule states that every orbital in a subshell is singly occupied before any orbital is doubly occupied.

Front

What is the Pauli exclusion principle?

Back

The Pauli exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers.

Front

If an atom of Sodium has a mass number of 23, how many neutrons does it have?

Back

It has 12 neutrons.

Front

How many p orbitals can exist at a given energy level?

Back

There may be a maximum of 3 p orbitals at a given energy level.

Front

What is the maximum number of electrons in a p subshell?

Back

The maximum number of electrons in a p subshell is 6.

Front

What is the difference between an atom's mass number and atomic number?

Back

The mass number is the total number of protons and neutrons, while the atomic number is the number of protons.

Front

What is the significance of the Aufbau principle?

Back

The Aufbau principle states that electrons occupy the lowest energy orbitals first.

Front

What is an orbital diagram?

Back

An orbital diagram is a visual representation of the electron configuration of an atom.