Electron Configuration Basics

State the maximum number of electrons that can be placed in the first electron shell of an atom.

• 1

• 2

• 6

• 8

State the maximum number of electrons that can be placed in the second electron shell of an atom.

• 2

• 8

• 16

• 24

State the maximum number of electrons that can be placed in the third electron shell of an atom.

• 2

• 14

• 16

• 8

A chlorine atom has 17 electrons. Its electron configuration must be:

• 2. 8. 7

• 10. 7

• 3. 7. 7

• 8. 2. 7

Tags

NGSS.MS-PS1-1

Which electron configuration belongs to Chlorine (Cl)?

• 1s² 2s² 2p⁶ 3s² 3p⁵

• 1s² 2s² 2p⁶ 3s² 3p⁶

• 1s² 2s² 2p⁶ 3s² 3p⁷

Tags

NGSS.MS-PS1-1

Match the parts of the electron configuration to what it represents.

• period

• 2

• block

• 1

• element

• s

Tags

NGSS.HS-PS1-1

How many electrons are in the outer shell of Chlorine (Cl)?

• 1

• 3

• 6

• 7

Match the following

(a)   states that electrons fill the lowest energy orbitals first

• Heisenberg Uncertainty Principle

• Aufbau Principle

• Hund's Rule

• Mrs. Vollers

Which element is depicted from this orbital diagram

• Fluorine

• Neon

• Chlorine

• Argon

Tags

NGSS.HS-PS1-1

Match the element to it's noble gas notation:

• [Kr] 5s²

• strontium

• [Ar] 4s² 3d⁹

• krypton

• [Kr]

• silicon

• [Ne] 3s² 3p²

• copper