group 1 and 17 elements

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6 Terms

1
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Metallic character

Tendency of an element to lose electrons to form positive ions

  • elements lower left of PT = greatest metallic character

<p>Tendency of an element to <strong>lose</strong> electrons to form <strong>positive ions</strong></p><ul><li><p>elements lower left of PT = greatest metallic character</p></li></ul>
2
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Non-metallic character

Tendency of an element to gain electrons to form negative ions

  • elements higher up to the right of PT = greatest non-metallic character

<p>Tendency of an element to <strong>gain</strong> electrons to form <strong>negative ions</strong></p><ul><li><p>elements higher up to the right of PT = greatest non-metallic character</p></li></ul>
3
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General Trend of Reactivity for Group 1 Metals w/ water

  • increasing reactivity going down group 1

  • Going down grp1, elements have lower ionization energies bc of presence of an additional energy level

  • Its easier for lower ionisation energy to transfer the outer valence electron to water

4
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Halogens

Non metallic elements in group 17 that exist as diatomic molecules

  • highly reactive with many substances bc tendency to gain electrons

5
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Displacement reaction

Common type of reaction halogens and halide salts readily undergo

AB + C → AC + B

6
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Spectator ion

Aqueous ions that remain unchanged throughout a chemical reaction