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Group 1 (alkali metals)
Higher
2 marks
Why does reactivity increase down Group 1?
A
More shells → outer electron further from nucleus and more shielded → weaker attraction → easier to lose → more reactive
B
Reactivity decreases down Group 1
C
All Group 1 elements have the same reactivity
D
Larger atomic radius means fewer electrons, reducing reactivity
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Group 1 (alkali metals) — Chemistry (4CH1) | Smartzi