Electrons in Atoms

The quantum mechanical model of the atom best describes how:

• the probable location of an electron can be determined.

• the exact location of an electron can be pinpointed.

• electrons lose energy as they orbit and eventually fall into the nucleus.

• the exact location of the neutron can be determined.

This scientist formulated a wave equation that accurately calculated the energy levels of electrons in atoms (the quantum mechanical model of the atom).

• Niels Bohr

• Albert Einstein

• Erwin Schrödinger

• Werner Heisenberg

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Which element is represented by the following electron distribution? 1s² 2s² 2p⁶ 3s²

• Neon; Ne

• Aluminum; Al

• Magnesium; Mg

• Potassium; K

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Electron configuration rule stating "electrons occupy orbitals of lowest energy first"...

• Hund's Rule

• Aufbau Principle

• Pauli Exclusion Principle

• Power Principle

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Which element is represented by the following electron distribution? 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰

• Zinc; Zn

• Nickel; Ni

• Copper; Cu

• Germanium; Ge

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What is the noble gas configuration for oxygen?

• [Ar] 3p⁴

• [He] 3s² 3p⁴

• [He] 2s² 2p⁴

• [Li] 2s² 2p⁴

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What is the electron configuration for Bromine; Br?

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁵

• 1s² 2s² 2p⁴

• 1s² 2s² 2p⁶

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How many electrons can the first energy level hold?

• 1

• 8

• 2

• 18

How many electrons can the "d" sublevel hold?

• 8

• 2

• 10

• 32

How many total electrons can the "f" sublevel hold?

• 2

• 6

• 18

• 14