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CHEMISTRY: TOPIC 3 PERIODICITY

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Pregunta:

What are the trends in atomic radius? and why? (3)

Autor: Sammy Universe



Respuesta:

Across period: decreases bec nuclear charge increases so more attraction to nucleus + constant shielding bec same no of shells Down group: increases bec of more shells being occupied = so the outer electrons are further away from the attraction of the nucleus (more distance) + more shielding = more repulsion = bigger radius


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