chemistry:ionic and covalent bonding

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aamilah16
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Report Thread starter 11 months ago
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can someone explain all the differences between ionic and covalent bonds please and the points you should know for the edexcel igcse chemistry exam...
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Hellllpppp
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Here’s a quick (not iGCSE specific summary)

Ionic bonding is between metal and non-metals as metals can form positive ions (cations) and non-metals can form negative ions (anions) - remember that ions are formed when atoms lose or gain electrons. As one is positive and one is negative there is strong electrostatic attraction. Ionic bonding results in a regular ionic lattice.

Covalent bonds form between non-metals and they are the sharing of a lone pair of electrons. Covalent molecules can be small (Cl2 for example) these typically only have week intermolecular forces between molecules (so have low melting points). There are also giant covalent structures (like carbon fullerenes) these have strong covalent bonds between atoms within the molecules and these need to break for them to melt (so they have high melting points).

For specification specific points look at summary notes on ‘physics and maths tutor’
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aamilah16
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#3
Report Thread starter 11 months ago
#3
(Original post by Hellllpppp)
Here’s a quick (not iGCSE specific summary)

Ionic bonding is between metal and non-metals as metals can form positive ions (cations) and non-metals can form negative ions (anions) - remember that ions are formed when atoms lose or gain electrons. As one is positive and one is negative there is strong electrostatic attraction. Ionic bonding results in a regular ionic lattice.

Covalent bonds form between non-metals and they are the sharing of a lone pair of electrons. Covalent molecules can be small (Cl2 for example) these typically only have week intermolecular forces between molecules (so have low melting points). There are also giant covalent structures (like carbon fullerenes) these have strong covalent bonds between atoms within the molecules and these need to break for them to melt (so they have high melting points).

For specification specific points look at summary notes on ‘physics and maths tutor’
thank you!
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