Metallic Bonding
Gbogbo ọrọ náà
Metals make up the vast majority of the periodic table, and their distinctive properties - conducting electricity, bending without breaking, gleaming under light - all trace back to one structural feature: a lattice of positive ions surrounded by a sea of delocalised electrons.
This lesson introduces the metallic bonding model, shows you how to represent it in 2-D diagrams, and explains how this single model accounts for the high melting points, electrical conductivity and malleability that make metals so useful in everyday life.
Ebumnobi
- know how to represent a metallic lattice by a 2-D diagram
- understand metallic bonding in terms of electrostatic attractions
- explain typical physical properties of metals, including electrical conductivity and malleability
Akọmọ Ojú-ẹkọ
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ayẹwo Ẹkọ
Ekele diri gi maka imecha ihe karịrị na Metallic Bonding. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- In a metallic lattice, the metal atoms have become: A) Negative ions B) Positive ions C) Neutral molecules D) Covalent pairs Answer: B
- Metals conduct electricity because they contain: A) Free ions that can move B) Covalent bonds that carry charge C) Delocalised electrons that are free to move D) Strong intermolecular forces Answer: C
- Which property of metals is explained by layers of ions being able to slide over each other? A) High melting point B) Electrical conductivity C) Malleability D) High density Answer: C
- Metallic bonding is best described as: A) The sharing of electron pairs between two atoms B) The transfer of electrons from a metal to a non-metal C) The electrostatic attraction between positive ions and delocalised electrons D) Weak intermolecular forces between molecules Answer: C
- Which of the following is NOT a typical property of metals? A) High melting point B) Brittle C) Good electrical conductor D) Malleable Answer: B
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Àwọn Ìwé Tó Dáa Láti Kà
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Metallic Bonding? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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