3. Quantum Mechanical Model of the Atom

Front

Where are the valence electrons in the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹?

Back

4s¹

Front

What does it mean when an atom is in its ground state?

Back

The atom has all of its electrons in the lowest energy orbitals available.

Front

What is the Pauli Exclusion Principle?

Back

An atomic orbital can only hold a maximum of 2 electrons, each with opposite spins.

Front

What is incorrect about an orbital diagram where both arrows in the 2p box are pointing up?

Back

In the 2p box there should only be 1 electron in the first 2p box and one in the 2nd 2p box.

Front

How many orbitals are there in the d sublevel?

Back

5

Front

What is an atomic orbital?

Back

A region in an atom where there is a high probability of finding electrons.

Front

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

Back

2 electrons.

Front

What is the shape of p orbitals?

Back

Dumbbell-shaped.

Front

What is the significance of the principal quantum number?

Back

It indicates the energy level and size of the orbital.

Front

What is the difference between ground state and excited state?

Back

Ground state has electrons in the lowest energy levels; excited state has electrons in higher energy levels.