Transition Elements
Gbogbo ọrọ náà
In the wide central block of the periodic table sit the transition elements, the familiar everyday metals such as iron, copper, nickel and chromium. They are the metals we build with, wire our homes with and shape into tools, and they bring a distinctive set of properties that set them apart from the reactive metals of Groups I and II.
In this lesson you will learn the characteristic properties of the transition elements: their high densities and melting points, their coloured compounds, their use as catalysts, and the way they form ions with more than one charge, such as iron(II) and iron(III).
Ebumnobi
- [Core] Describe the transition elements as metals that: (a) have high densities (b) have high melting points (c) form coloured compounds (d) often act as catalysts as elements and in compounds
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 Transition Elements. 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.
- Which is a typical property of a transition element? A. Low melting point B. White compounds only C. High density D. Very reactive with water Answer: C
- Transition elements often act as: A. Insulators B. Catalysts C. Non-metals D. Noble gases Answer: B
- Which pair of ions shows the variable oxidation numbers of iron? A. Fe+ and Fe2+ B. Fe2+ and Fe3+ C. Fe3+ and Fe4+ D. Fe and Fe2+ Answer: B
- Compared with Group I metals, transition elements are: A. Softer and more reactive B. Harder and less reactive C. Lighter and more reactive D. Lower melting Answer: B
- Transition metal compounds are usually: A. Colourless B. White C. Coloured D. Gaseous Answer: C
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 Transition Elements? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
Dawunlodi Ẹpp naa lori Google Playstore.
Ihe nile ichoro iji nwee ihe ịga nke ọma na JAMB, WAEC & NECO.
