Topic 9 - Chemical Periodicity Flashcards by Sienna Alice Caskey

Q

How are elements in the periodic table ordered?

A

By increasing proton number.

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Q

A

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Q

Does the atomic radius increase or decrease across period 3?

A

Decrease

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Q

Does atomic radius increase or decrease down groups?

A

Increase

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Q

Which element has the highest melting point in period 3?

A

Silicon

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Q

Why does Si have the highest melting point in period 3?

A

It has a giant covalent (macromolecular) structure.

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Q

A

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