Semester Review #3

Front

What atom matches this electron configuration? 1s² 2s² 2p⁶ 3s²

Back

Magnesium

Front

How many electrons are in the outer shell of Sodium (Na)?

Back

1

Front

Which area on the periodic table represents the electrons in the 'd' sublevel?

Back

Transition elements

Front

What does the Pauli exclusion principle state?

Back

No two electrons in the same orbital can have the same spin.

Front

Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?

Back

Aufbau Principle

Front

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

Back

2

Front

What is the electron configuration for Neon (Ne)?

Back

1s² 2s² 2p⁶

Front

What is the significance of the atomic number?

Back

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

Front

What are valence electrons?

Back

Electrons in the outermost shell of an atom.

Front

What is Hund's Rule?

Back

Single electrons with the same spin must occupy each orbital before additional electrons with opposite spins can occupy the same orbitals.