Properties of Ionic compounds and Covalent Bonds

Properties of Ionic Compounds and Covalent Bonds

1. Properties of I onic C ompounds

2. What are the Properties of Ionic Compounds? 1. Ionic compounds form crystals . 2.They conduct electricity when they are dissolved in water, also molten ionic compounds (molten salts) also conduct electricity . 3. They are hard and brittle 4. They have high melting points and boiling points . 5. They are good insulators .

3. Fun Fact: Other features of ionic bonds: Soluble in water. They are  compounds  formed from metals and non-metals. In a solid state they do not conduct electricity. ... They contrast to the characteristics of a covalent  bond .

4. Covalent Bonds

5. What are covalent Bonds? Covalent bond , in chemistry, the interatomic linkage that results from the sharing of an electron pair between two atoms.  Covalent bonding  occurs when pairs of electrons are shared by atoms. 

6. Ionic Bond vs. Covalent Bond Ionic bonds  form when a  nonmetal  and a  metal  exchange electrons, Usually are formed between a cation , which is usually a  metal , and an anion, which is usually a  nonmetal . In contrast, atoms with the same electronegativity share electrons in  covalent bonds , because neither atom preferentially attracts or repels the shared electrons.

7. Ionic Bond vs. Covalent Bond

8. Single Covalent Bond between similar Atoms A  single covalent bond  is when only one pair of electrons is shared between atoms.

9. Double Covalent Bond between similar Atoms A double covalent bond is where two pairs of electrons are shared between the atoms rather than just one pair

10. Triple Covalent Bond between similar Atoms   triple bond in chemistry is a chemical bond between two atoms involving six bonding electrons instead of the usual two in a covalent single bond.

11. Before bonding, H is 1s 1 and after bonding, H is 1s 2 and O 1s 2 2s 2 2p 4 O 1s 2 2s 2 2p 6 Single covalent bond between different atoms

12. Double Covalent bond between dissimilar atoms Before bonding C is 1s 2 2s 2 2p 2 and O is 1s 2 2s 2 2p 4 after bonding C is 1s 2 2s 2 2p 6 and O is 1s 2 2s 2 2p 6 , both are isoelectronic to Ne

13. Lone Pairs and Bond Pairs Lone Pairs In  chemistry , a  lone pair  refers to a  pair  of valence electrons that are not shared with another atom in a covalent bond and is sometimes called an unshared  pair  or non-bonding  pair .  Lone pairs  are found in the outermost electron shell of atoms. Bond pair A  bond pair  is a  pair  of electrons that are in a  bond . A single  bond  is always composed of two electrons that are paired with each other.

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