Chem 4.3 Part 1 Revising the Atomic Model

What is the name of the model proposed by Erwin Schrödinger in 1926 that describes the behavior of electrons in atoms?

• Bohr Model

• Quantum Mechanical Model

• Rutherford Model

• Electron Cloud Model

In the quantum mechanical model, what is the term used to describe the region of space where there is a high probability of finding an electron?

• Electron Path

• Atomic Orbital

• Electron Shell

• Nucleus

How does the quantum mechanical model differ from the Bohr model in terms of electron movement?

• It specifies an exact path for electrons.

• It restricts electrons to fixed orbits.

• It does not specify an exact path for electrons.

• It allows electrons to move freely without restriction.

Which model uses a "fuzzy cloudlike region" to represent the likely locations of electrons in an atom?

• Bohr Model

• Quantum Mechanical Model

• Electron Cloud Model

• Shell Model

What is the main focus of the shell model of the atom?

• Describing the exact path of electrons

• Describing the main electron energy levels as shells

• Describing the nucleus of the atom

• Describing the probability of finding an electron

Explain how the electron cloud model visually represents the probability of finding an electron in an atom.

• It shows electrons in fixed orbits.

• It uses dense dots to indicate high probability areas and sparse dots for low probability areas.

• It uses lines to connect probable electron locations.

• It shows electrons as stationary points.

What are the sublevels within the principal energy levels in the shell model called?

• Atomic Orbitals

• Electron Paths

• Subshells

• Nuclei

Compare the electron cloud model to observing a flying hummingbird's wings. What is the similarity in terms of location probability?

• Both have fixed positions at any instant.

• Both have a high probability of being in a specific location at any instant.

• Both have some probability of being anywhere in a blurry region.

• Both can be precisely pinpointed at any instant.