Name:

(a) a liquid non-metal

(b) two metalloids

(c) a metal which do not corrode easily

(d) two metals which react with cold water

(e) a non-metal which can form a positive ion.

(f) a non-metal which shows reducing property.

From the list of characteristics given below, select the five which are relevant to non-metals and their compounds:

A. Ductile

B. Conduct electricity

C. Brittle

D. Acidic oxides

E. Basic oxides

F. Discharged at anode

G. Discharged at cathode

H. Ionic chlorides

I. Covalent chlorides

J. Reaction with dilute sulphuric acid yields hydrogen

K. 1, 2 or 3 valence electrons

L. 5, 6, 7 valence electrons

(Write the five letters corresponding to the correct characteristics)

Why is hydrogen kept in the metal activity series?

Why do gold ornaments look new even after several years of use?