Question

1. Define malleability , ductility and sonorous ?
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Answer 1

Answer:

(i) The property of metals which allows metals to be hammered into thin sheets is called Malleability. Due this unique property, metals can be flattened into thin sheets by hammering and rolling. For example, aluminium due to its high ductility, it can be changed into thin sheets to make aluminium foil.

(ii) The property of metals which enables them to be drawn into wires is called Ductility. Due to this property metals can be stretched without breaking and drawn into thin wires. For example, Copper metal is used for making electric wires because it is highly ductile in nature.

(iii) Metals have quality to reflect light. As a result, metals are lustrous in nature. It makes metals attractive due to their luster and rarity. Hence, metals like, gold and silver are used to make jewellery. These metals do not tarnish or react with air.

Answer 2

Explanation:

• Malleability is a substance's ability to deform under pressure (compressive stress). If malleable, a material may be flattened into thin sheets by hammering or rolling.
• Ductility is the physical property of a material associated with the ability to be hammered thin or stretched into wire without breaking. A ductile substance can be drawn into a wire. ... Nonmetals are not generally ductile.
• Sonority is the property of a substance to produce sound when collide together. Metals are sonorous and produce sound when struck together in solid state. Electron bonding in metals is highly delocalized, due to their very low electronegativity.

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