Valency is 6-4=2
Valence electron can be defined as the electron revolving in the outermost orbit which are weakly held by nucleus.
Valence Electron is not situated but revolving around the nucleus in the outermost orbit of the atom.
(a)as it belongs to group 16 ,its valency is (10-group no.)=6.
(b) its molecular formula with H is XH2,as it require 2more electrons to complete its octet.
(c)the element X is Sulfur(S) and it is a non-metal..
HOPE IT HELPS..
1) number of valence electron are 6 and valency is 2
3) The element is sulphur and it is a non metal
3. the outermost electron present in the cell is known as valence electron
Ionic compounds have tendency to donate electron.
The most unstable elemen will most likely be an ionic compound.
a is incorrect .because a group element didnt shows similar chemical properties
Examples- Oxygen has 6 valence electrons, so -8+6=-2
Electronic configuration -- K shell - 2 , L shell - 5
Valency -- 3
Valence electrons -- 5
group:5(A)group or 15 group,