Answer:
Properties of group - 16
elements :
(i) The melting
point and boiling point of the group ? If elements increase with increase in
atomic number down the group.
(ii) All the
elements combine with hydrogen to form the compounds of the type 
.
e.g. 
(iii) Oxygen
forms only one oxide 
whereas other elements form
two types of oxide 
& 
all are acidic. are stronger acid than .
(iv) Oxygen
shows valency 2 only due to absence of d-orbital while other elements of this
group show valency 2, 4 and 6 due to presence of d-orbital.
(b) Tendency of
atom to link with one another through sovalent bonds to form chain and rings is
called catenation. Tom top to bottom in a group of periodic table atomic size
increases while electronegativity decreases. Therefore atenation property also
decreases down the group Sulphur exhibits tendency for catenation but oxygen
does not scause oxygen forms stable 
bond.
You need to login to perform this action.
You will be redirected in
3 sec
