Modern Atomic Theory

What is the modern description of electrons in atoms called?

• Bohr model

• Quantum mechanical model

• Shell model

• Atomic orbital model

What is the region of space where there is a high probability of finding an electron called?

• Atomic shell

• Atomic cloud

• Atomic orbital

• Atomic subshell

Which principal energy level is closest to the nucleus and has the lowest energy?

• Principal energy level 1

• Principal energy level 2

• Principal energy level 3

• Principal energy level 4

What causes the colors in fireworks according to the quantum mechanical model?

• Electron transitions between energy levels

• Electron collisions with other atoms

• Nuclear reactions

• Chemical reactions

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What is the energy relationship between the s, p, d, and f orbitals within a shell?

• s orbital has the highest energy, followed by p, d, and f orbitals

• s orbital has the lowest energy, followed by p, d, and f orbitals

• s, p, d, and f orbitals have the same energy

• The energy relationship depends on the number of electrons in the shell

Which orbital shape is spherical?

• s orbital

• p orbital

• d orbital

• f orbital

How many electrons can the first energy level hold?

• 1

• 2

• 8

• 0

Identify the Electron Configuration for Aluminum (Al)

• 1s² 2s² 2p⁶ 3s² 3p¹

• 1s² 2s² 2p⁶ 3s² 3p³

• 1s² 2s² 2p⁶ 3s² 4p¹

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What electron configuration matches an oxygen atom?

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵

• 1s²2s²2p⁴

• 1s²2s²2p⁶

• 1s²2s²2p⁶3s²3p⁶4s²3d¹

Tags

NGSS.HS-PS1-1

How does ionization energy change as you move across a period?

• It increases

• It stays the same

• It decreases

• There is no way to know

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