Question

Iodine is
A.Lustrous non metal
B.Sonorous non metal
C.Lustrous metal
D.Malleable metal

Answer 1

Hint: Mostly elements in the periodic table are metals. This have alkali metals, transition metals, lanthanides, actinides and alkaline earth metals. Metals are separated from nonmetals on a periodic table through a line originating from carbon, to radon. The elements lying between them two are phosphorus, selenium and iodine.
Properties of Metals
Physical Properties of Metals
1.Shiny (lustrous) in nature
2.Density and melting point is high
3.Mouldable (Malleable)
4.Ductile
5.At the room temperature, it is in solid form except mercury
6.Opaque
Non-metal are the elements which form negative ions by accepting or gaining electrons.Non-metal usually have 4,5,6,7 electrons in their outermost cell. They are mostly gases and sometimes liquid. Some are even solid at room temperatures like Carbon, sulfur and phosphorus.
Properties of Non-Metals
Physical Properties of Nonmetals
1.Poor conductors of electricity and heat
2.Non-Ductile metals
3.Brittle solids
4.These are not sonorous
5.Transparent

Complete step by step answer:
Iodine is a non-metallic, dark-gray/purple-black, lustrous, solid element. As Iodine falls in the halogen family in the periodic table and as mentioned above the properties of nonmetal it fulfills most of them.∴It is non –metal and hence lustrous. Metals have high elasticity. Sound requires elasticity for high-speed propagation. Generally those scales in which we live, wavelengths of many modes of oscillations are in centimeters; these sounds can easily have audible frequencies. Many metals are used in musical instruments to exploit their sonority property.Examples of malleable metals are gold, iron, aluminium, copper, silver and lead.

Note: The Physical Properties of Iodine are as follows:
Color : Violet black. A gray solid that gets changed into purple vapour when heated.
Luster : Has a shine or glow.
Odor : Strong, harsh odor.
Crystalline structure : Rhombic.
Density : Heavy