How to find the valency of hydrogen, chlorine and phosphorus ?
How to find the valency of hydrogen, chlorine and phosphorus ?
Valency is defined as no. of electrons gain or loose by an element to acquire the noble gas configuration. It can be calculated by number of outer most or valence electrons.If the number of electron is ≤ 4, valency = number of electron present in outer shell. If number of electron is > 4, valency = (8-n), where n is the number of electron present in outer most shell.
1)Hydrogen has only one electron in its valence shell . So the valency of hydrogen is 1.
2)Electronic configuration of Cl is 2,8,7.It has 7 electrons in its outermost shell so the valency can be calculated as 8-7 =1.
3)Phosphorus with electronic configuration 2,8,5 have 5 electrons in its outer most shell.The valency can be calculated as 8-5 = 3.
Valency is defined as no. of electrons gain or loose by an element to acquire the noble gas configuration. It can be calculated by number of outer most or valence electrons.If the number of electron is ≤ 4, valency = number of electron present in outer shell. If number of electron is > 4, valency = (8-n), where n is the number of electron present in outer most shell.
1)Hydrogen has only one electron in its valence shell . So the valency of hydrogen is 1.
2)Electronic configuration of Cl is 2,8,7.It has 7 electrons in its outermost shell so the valency can be calculated as 8-7 =1.
3)Phosphorus with electronic configuration 2,8,5 have 5 electrons in its outer most shell.The valency can be calculated as 8-5 = 3.
