BharatNotes Malleable
adjectiveUsage in a UPSC answer
A robust democracy depends on institutions that are resilient rather than malleable, for once constitutional safeguards become malleable in the hands of a dominant executive, the rule of law quietly yields to the rule of expediency.
Synonyms
Antonyms
Word Family
malleability (n), malleably (adv), malleableness (n), mallet (n cognate)
Root
Latin malleus = hammer → malleāre = to hammer; Late Latin malleābilis; related to mallet, maul
Etymology
From Middle French malléable, from Late Latin malleābilis, from Latin malleāre (to hammer), from malleus (hammer); related to English mallet and maul.
Memory Hook
Think of a MALLET (a hammer) beating soft metal into shape - what the mallet can reshape is MALLEABLE. Both share the Latin root malleus, 'hammer'.
How This Word Works in UPSC Writing
Able to be hammered or rolled into thin sheets without fracturing. The explanation lies in metallic bonding, where layers of positive ions sit in a sea of delocalised electrons, so when force makes the layers slide past one another the electron sea simply reforms around the new positions and the bond survives. This is why metals deform rather than shatter, and it is the same reason ionic solids are brittle, since sliding their layers brings like charges opposite each other and the crystal splits. Gold is the most malleable metal, beatable into leaf thin enough to transmit light, which is why gilding is possible at all. The industrial expression of the property is rolling, which turns cast metal into the sheet used for car bodies, roofing and foil.
Don’t Confuse It With
Malleable means shapeable into sheets under compression, by hammering or rolling. Ductile means drawable into wire under tension. Most metals are both, but not equally, and zinc is the standard exception, being brittle at room temperature and workable only when warmed. Brittle means fracturing with almost no permanent deformation first. Elastic deformation reverses when the load is removed, while plastic deformation is permanent, and malleability is a property of the plastic range.
Hindi Meaning
आघातवर्ध्य (āghātvardhya); आघातवर्ध्यता for malleability.
Common Questions
- What makes metals malleable?
- Metallic bonding, in which layers of positive ions can slide past one another through a sea of delocalised electrons that reforms around them, so the metal deforms instead of breaking.
- What is the difference between malleable and ductile?
- Malleable means it can be beaten or rolled into sheets, while ductile means it can be drawn out into wire.
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