Question

Find the valancy of of all the elements of periodic table

Answer 1

Answer:

Valency of elements of group 1 A is +1 as they can donate 1 electron

= = = =  = = = = = = = = = =          2A is +2 as they can donate 2 electrons

=====================          3A is +3 as they can donate 3 electrons

=====================          4A is +_4 as they can accept or donate 4 electrons beacuse they have 4 electrons and they need 4 more electrons to complete their octate so they form covalent bond by the mutual sharing of electrons

valency of elements of group 5A is -3 as they can accept 3 electrons

========================== 6A is -2 as they can accept 2 electrons

=========================    7A is -1 as they can accept 1 electron

========================     8A is 0 as they are inert and their outermost shell is completely filled so they do not donate or accept electrons from another atom