Ionic Bonds

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  • Created by: swagskool
  • Created on: 12-01-23 19:49
Ionic Bond
The force of attraction binding oppositely charged ions together.
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Electron Dot Structure
A depiction of valence electrons around the symbol of an element.
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Valence Electron
An electron in the highest occupied energy level of an atom
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Octet Rule
Atoms react so as to acquire the stable electron structure of a noble gas.
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When an atom gains or loses electrons, the _______ does not change. This means the atomic mass and the atomic ______ stay the same.
nucleus, number
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Sodium is in group 1 and oxygen is in group 6. In the dot-and-cross diagram for sodium oxide, how many sodium ions would there be?
2
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In ionic bonding what do group 1 metals always do?
Group 1 metals always lose 1 electron to form positive ions with a charge of +1.
E.g. a sodium atom (Na), with the electronic structure (2,8,1), loses its outer electron when forming an ion to make Na+.
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In ionic bonding what do group 2 metals always do?
Group 2 metals always lose 2 electrons to form doubly positive ions.
E.g. a magnesium atom (Mg), with the electronic structure (2,8,2), loses both its outer electrons when forming an ion to make Mg2+.
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In ionic bonding what do non metals always do?
Non-metals (groups 6 & 7)

Non-metal atoms always gain electrons to form (become) negative ions.
E.g. a fluorine atom (F), with the electronic structure (2,7), will gain an electron when forming an ion to make F-.
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In ionic bonding what do Noble gases (Group 0) always do?
Noble gases already have a full outer shell. Noble gases are unreactive and don't normally form ionic bonds with other elements.
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Materials with ionic bonds usually:
Have High melting points, only conduct electricity when molten or dissovled
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In Ionic bonding what do all the groups always do?
Group 1 metals
Form positive ions with a single positive charge
Group 2 metals
Form positive ions with a double positive charge
Group 6 non-metals
Form negative ions with a double negative charge
Group 7 non-metals
Form negative ions with a single negativ
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How are ions formed?
when an atom gains or loses an electron
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give me a correct description of how a lithium atom becomes a lithium ion.
Lithium loses an electron to become a positively charged ion because Lithium has 1 electron in its outer shell, which it 'wants' to lose to become more stable.
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Ions with _______ charges will attract each other.
This force of attraction between _________ charged ions forms an _____ bond.
opposite, oppositely, ionic
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Oppositely charged ions
_______
each other.This is called an
_____________
force. This same force is also what attracts protons to electrons within atoms and ions.
attract, electrostatic
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Other cards in this set

Card 2

Front

Electron Dot Structure

Back

A depiction of valence electrons around the symbol of an element.

Card 3

Front

Valence Electron

Back

Preview of the front of card 3

Card 4

Front

Octet Rule

Back

Preview of the front of card 4

Card 5

Front

When an atom gains or loses electrons, the _______ does not change. This means the atomic mass and the atomic ______ stay the same.

Back

Preview of the front of card 5
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