Chemistry A-Level
Group 7 reactivity decreasing down the group
What Group 7 reactivity decreasing down the group means in Chemistry A-Level, as defined for OCR.
Definition of Group 7 reactivity decreasing down the group
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Reference: OCR
Reactivity decreases down the group because the outer shell is further from the nucleus and more shielded, so oxidising power falls.
Topics that use Group 7 reactivity decreasing down the group
- Periodicity (OCR A-Level)
Related terms
- Applying the sequence to specific elements
- atomic radius
- Cations and delocalised electrons
- delocalised electrons
- Distinction from mass number and relative atomic mass
- electrostatic attraction
- First ionisation energy
- Forces broken on melting
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