what is valency
what is valency ? What is its use ?
Ans- Valency is the combining capacity of an element. It can be used to find out how many atoms of an element will combine with the other element to form a chemical formula.
For example, hydrogen has a valency of +1 and chlorine has a valency of -1, so one atom of hydrogen combines with one atom of chlorine to form hydrochloric acid. Further oxygen has a valency of —2, so one atom of oxygen combines with 2 atoms of hydrogen to form water molecule, H,O
Do all elements have a charged valency ? Explain
All elements do not form ions so their valencies do not have a charge. For example, carbon and silicon have a valency of 4 and nitrogen has a valency of 3. Further molecules containing only non-metals are formed without a charged valency.
For example, in carbon tetrachloride (CCI,), carbon has a valency of 4 and chlorine has a valency of 1
- What is an ion
- what are molecules
- what is atomic mass unit
- Dalton’s atomic theory to the mass of atom
- drawbacks of Dalton’s atomic theory
- Postulates of Dalton’s atomic theory
- what is acceleration
- what is scalar quantities ?
- what is uniform speed ?
- what is vector quantities ?
- what is non-uniform speed ?
- what is speed ?
- what is velocity ?
- what is average speed ?
- Newtons First Law of Motion with examples.
- what is Newtons second law of motion ?
- what is Newtons third law of motion ?
- what is motion | what is rest ?
- newton’s law of motion formula.
what is valency free pdf 2022