3863339
Description
Flashcards by Holly Bamford, updated more than 1 year ago
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Created by Holly Bamford
about 10 years ago
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| Question | Answer |
| 1st Ionisation energy (groups) | X(g) ---> X+(g) + e- Going down a group decreases as the outer electron is further away and is shielded by inner shells |
| Atomic radius (groups) | Atomic radius increases down the group as an extra inner shell of electrons is added per period the more electron shells the bigger the radius |
| Melting & Boiling points (group 1 & 2) | Decrease down the group Distance between nucleaus and electrons increases so weaker bonds less energy required to break them |
| Melting & Boiling points (Halogens & Noble gases) | The molecule gets bigger and the intermolecular forces get stronger and more energy is required to overcome them |
| Electrical conductivity | Increases as metallic character increases |
| From left to right across a period | 1st ionisation energy increases atomic radius decreases electronegativity increases |
| Down a group | 1st ionisation energy decreases atomic radius increases electronegativity decreases increase in metallic character |
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