What are Ionic Compounds?
They are compounds containing more than one ions
Example
Sodium Chloride (NaCl) contains 2 ions;
Positively charged Sodium (Na + ) and Negatively charged Chloride (Cl - )
It has equal number of positively and negatively charged ions
So overall charge is 0
What is a Molecule?
A group of atoms chemically bonded together is Here are the valency of a few elements:
called Molecule.
Difference between Polyatomic Ions and Ionic Compounds
|
Polyatomic Ions |
Ionic Compounds |
|
They are ions |
They are compounds |
|
They usually do not exist on their own |
They can exist on their own |
|
They are positively or negatively charged |
They do not carry any net charge |
|
Ammonium (NH4 + ) is positively charged Chloride (Cl - ) is negatively charged |
Sodium Chloride (NaCl) It has equal number of positively charged Na + ions and Negatively charged Cl - ions So overall charge is 0 |
What is a Molecule?
A group of atoms chemically bonded together is Here are the valency of a few elements:
called Molecule.
Example -
In text Question -
NCERT Question - Q3
