1.5 - Electron Configuration

What is the first step to finding electron configuration?

• Find Nitrogen in the bottom corner

• Find Hydrogen in the top left corner

• Find X

• Click this button

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What chemical is represented in this electron configuration?

1s²2s²2p⁶3s²3p⁶4s¹

• Rubidium

• Calcium

• Sodium

• Potassium

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What is the Pauli Exclusion Principle?

• Each orbital can hold two electrons with the SAME direction spins

• Each orbital can hold two electrons, it doesn't matter which way they face

• Each orbital can hold two electrons with OPPOSITE direction spins

• Each orbital can hold as many electrons as possible

Which rule is this?

Within a sublevel place one electron per orbital before paring them

• Hund's rule

• Pauli Exclusion Principle

• Aufbau Principle

• Atomic Orbitals

Select the correct electron/noble gas configurations for Titanium

• [Ar] 3d² 4s²

• 1s²2s²2p⁶3s²3p⁶4s²3d²

• 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• [Ar] 3d² 4s³

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How many valence electrons does phosphorus have?

(a)  

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Write down an element with 7 valence electrons.

Use correct spelling (don't use one from the bottom row.)

(a)  

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What element is shown?

[Kr] 5s²4d⁵

(a)  

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What is the Aubfau Principle?

• Arrows are drawn in the boxes starting from the highest energy sublevel and working up.

• Arrows are drawn in the boxes starting from the lowest energy sublevel and working down.

• Arrows are drawn in the boxes starting from the lowest energy sublevel and working up

• Arrows are drawn in the boxes starting from the highest energy sublevel and working down.

Select all that are correct

• Magnesium - 1s²2s²2p⁶3s²

• Rhodium - [Kr] 5s²4d⁷

• Lithium - 1s²2s¹

• Magnesium - [Ne] 3s²

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