Orbital Diagrams and Electron Configurations

Valence electrons are located...

• inside the nucleus

• in outer space

• on the outermost orbit of an atom

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

This orbital diagram represents:  

• C

• B

• N

• O

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Zinc

• Copper

• Nickel

• Germanium

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NGSS.HS-PS1-1

The electron configuration of an atom is 1s²2s²2p⁶.  The number of electrons in the atom is 

• 3

• 6

• 8

• 10

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many electrons can the s sublevel hold?

• 14

• 10

• 2

• 6

How many electrons can the p sublevel hold?

• 14

• 10

• 2

• 6

Tags

NGSS.HS-PS1-1

The diagram above represents two electrons with 

• a. opposite spins.

•  b. the same spin.

• c. different energies.

• d. different energy levels.

Using noble-gas notation, calcium is represented by [Ar]4s². How many electrons does calcium have?

• 18

• 20

• 22

• 24

Tags

NGSS.HS-PS1-1

Electron configurations are represented using orbital diagrams by:

• using arrows to indicate electron spins in orbitals

• writing the electron configuration in a linear format

• using numbers to represent electron energy levels

• drawing circles to represent electron shells

In electron configuration, what does an empty box represent?

• An unoccupied orbital

• An orbital with one electron

• A filled orbital with opposite spins

• An electron with spin up