Chemistry (9-1) - 0971 CIE

Noble Gases

Gbogbo ọrọ náà

On the far right of the periodic table sits a group of elements so reluctant to react that they were once called the inert gases: helium, neon, argon and the rest. They float as single atoms, glow in coloured lights and fill the spaces where ordinary air would cause trouble. Their secret is in their electron arrangement.

In this lesson you will learn that the Group VIII noble gases are unreactive, monatomic gases, and you will explain that unreactivity in terms of their electronic configuration. This idea, a full outer shell, is the key to understanding why other elements bond at all.

Ebumnobi

Describe the Group VIII noble gases as unreactive, monatomic gases and explain this in terms of electronic configuration.

Akọmọ Ojú-ẹkọ

The noble gases explain one of chemistry's deepest ideas: why elements react. Because a full outer electron shell makes the noble gases so stable and unreactive, every other element can be seen as reacting in order to reach the same stable arrangement. Understanding the noble gases lights up the whole topic of bonding.

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Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Noble Gases. 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.

The noble gases exist as: A. Diatomic molecules B. Single atoms C. Giant structures D. Negative ions Answer: B
Why are the noble gases unreactive? A. They are very heavy B. They have a full outer electron shell C. They are metals D. They have no electrons Answer: B
Which term describes a gas that exists as single atoms? A. Diatomic B. Monatomic C. Triatomic D. Polyatomic Answer: B
How many electrons are in the outer shell of argon? A. 2 B. 6 C. 8 D. 18 Answer: C
Which noble gas is used to fill filament light bulbs? A. Helium B. Neon C. Argon D. Hydrogen Answer: C