How to calculate valence electrons in a compound ?? Answer needed fast
Dear student
valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond.
The number of valence electrons for molecules can be calculated by adding the valence electrons of all the atoms that form that respective molecule.
For example
Carbon has atomic no. 14. So its valance electrons will be 4 (2,8,4)
For a compound let us take example of water.
In H2O valance electrons = 2×1+6 which is equal to 8 as hydrogen has 1 valance electron and oxygen has 6.
Another example is of H2SO4
One molecule of sulphuric acid has 2 H atoms, 1 S atom, and 4 O atoms, each contributing 1, 6, and 6 valence electrons. So the number of valence electrons for 1 molecule of sulphuric acid is 2×1+6×1+4×6= 32
Regards
valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond.
The number of valence electrons for molecules can be calculated by adding the valence electrons of all the atoms that form that respective molecule.
For example
Carbon has atomic no. 14. So its valance electrons will be 4 (2,8,4)
For a compound let us take example of water.
In H2O valance electrons = 2×1+6 which is equal to 8 as hydrogen has 1 valance electron and oxygen has 6.
Another example is of H2SO4
One molecule of sulphuric acid has 2 H atoms, 1 S atom, and 4 O atoms, each contributing 1, 6, and 6 valence electrons. So the number of valence electrons for 1 molecule of sulphuric acid is 2×1+6×1+4×6= 32
Regards