Electron arrangement in atoms

............................. is the way in which electrons are arranged in various orbitals around the nuclei of atoms.

• Electron configuration

• Proton configuration

• Neutron configuration

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NGSS.HS-PS1-1

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“electrons occupy the orbitals of the lowest energy first”.

• Aufbau principle

• Pauli Exclusion Principle

• Hund’s rule

“Electrons occupy orbitals of the same energy in a way that makes the number of electrons with the same spin direction as large as possible”.

• Aufbau principle

• Pauli Exclusion Principle

• Hund’s rule

“An atomic orbital may describe at most two electrons”.

• Aufbau principle

• Pauli Exclusion Principle

• Hund’s rule

A quantum mechanical property of electrons and may be thought as clockwise and anti-clockwise.

• Principal

• Secondary

• Spin

Write the electronic configuration of hydrogen atom.

• 1s²

• 1s¹

• 2s¹

Write the electronic configuration of carbon atom.

• 1s² 2s² 2p⁶

• 1s² 2s² 2p²

• 1s¹ 2s¹ 2p⁴

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Write the electronic configuration of copper atom.

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁹

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d¹⁰

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁴

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Write the electronic configuration of calcium atom.

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁹

• 1s²2s²2p⁶3s²3p⁶4s²

• 1s²2s²2p⁶3s²3p⁶

Tags

NGSS.HS-PS1-1

Write the electronic configuration of neon atom.

• 1s² 2s² 2p⁶

• 1s² 2s¹ 2p⁵ 3s²

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁴

Tags

NGSS.HS-PS1-1