Arsen




























































33

Germanium ← Arsen → Selen

P
↑
As
↓
Sb

Arsen i periodesystemet
Heile tabellen


Generelle eigenskapar

Namn, kjemisk symbol,
atomnummer

Arsen, As, 33

Kjemisk serie

Halvmetall

Gruppe, periode, blokk

15, 4, p

Tettleik, hardleik
5727 kg/m3, 3,5 (ikkje SI)

Utsjånad
Metallgrått
Arsen

Atomeigenskapar

Atommasse
74,92160 u (ikkje SI)

Atomradius (berekna)
115 (114) pm

Kovalent radius
119 pm

Ioneradius
58 pm (ladning: +3)

van der Waals radius
185 pm

Elektronkonfigurasjon
[Ar]3d104s24p3displaystyle 3d^104s^24p^3

Elektron per energinivå
2, 8, 18, 5

Oksidasjonstrinn (oksid)

−3, +3, +5 (svak syre)

Krystallstruktur
Rombisk

Fysiske eigenskapar

Tilstandsform

Fast stoff

Smeltepunkt
1090 K (817°C)

Kokepunkt

subl. 887 K (614°C)

Molart volum
13,08 cm3/mol

Fordampingsvarme
34,76 kJ/mol

Smeltevarme
24,44 kJ/mol

Damptrykk
100 000 Pa ved 874 K

Ljodfart

(?) m/s ved °C

Diverse eigenskapar

Elektronegativitet
2,18 (Paulings skala)

Spesifikk varmekapasitet
24,64 J/(kg·K)

Elektrisk konduktivitet
3,45 MS/m

Termisk konduktivitet
50,2 W/(m·K)

Ioniseringspotensial
   947 kJ/mol
 1 798 kJ/mol
 2 735 kJ/mol
 4 837 kJ/mol
 6 043 kJ/mol
12 310 kJ/mol

Mest stabile isotopar























Iso-
top

Naturleg
førekomst

Halverings-
tid (ikkje SI)

NM

NE MeV
(ikkje SI)

NP

73As
(kunstig) 		80,3 døgn
ε
(?)
73Ge

74As
(kunstig) 		17,78 døgn ε
β+
β−
(?)
0,941
1,35; 0,717
74Ge
74Ge
74Se

75As
100%
(stabilt)

SI-einingar og STP er brukt unntatt der det er avmerkt

Arsen er eit grunnstoff med kjemisk symbol As og atomnummer 33. Det er eit halvmetall i gruppe 15 i periodesystemet.


Arsen, og særleg visse arsensambindingar, er giftig. Nokre stader i verda er grunnvatn forureina av arsen. I svært store mengder kan inntak av arsen vera dødeleg.



Viktige sambindingar |



  • Arsen(III)oksid eller arsenikk (As4O6)


  • Arsin (AsH3)


Sjå også |



  • Arsenikk og gamle kniplingar (skodespel)

  • Periodesystemet

  • Grunnstoffliste

  • Isotoptabell


Bakgrunnsstoff |


  • Om arsen

  • Miljøstatus i Norge om arsen


  • Bellona om arsen

    Spire Denne kjemiartikkelen er ei spire. Du kan hjelpe Nynorsk Wikipedia gjennom å utvide han.




Autoritetsdata

  • WorldCat

  • Store Norske leksikon

  • GND

  • LCCN

  • BNF

  • BNF (data)

  • NDL


-

Popular posts from this blog

Was Woodrow Wilson really a Liberal?Was World War I a war of liberals against authoritarians?Founding Fathers...

Image
Do VLANs within a subnet need to have their own subnet for router on a stick? What are the differences between the usage of 'it' and 'they'? Dragon forelimb placement How do we improve the relationship with a client software team that performs poorly and is becoming less collaborative? What typically incentivizes a professor to change jobs to a lower ranking university? How to write a macro that is braces sensitive? Modeling an IPv4 Address Writing rule stating superpower from different root cause is bad writing Can I ask the recruiters in my resume to put the reason why I am rejected? Approximately how much travel t...
Read more

Integral that is continuous and looks like it converges to a geometric seriesTesting if a geometric series converges by taking limit to infinitySummation of arithmetic-geometric series of higher orderGeometric series with polynomial exponentHow to Recognize a Geometric SeriesShowing an integral equality with series over the integersDiscontinuity of a series of continuous functionsReasons why a Series ConvergesSum of infinite geometric series with two terms in summationUsing geometric series for computing IntegralsLimit of geometric series sum when $r = 1$

Image
Why did Rep. Omar conclude her criticism of US troops with the phrase "NotTodaySatan"? Contradiction proof for inequality of P and NP? What is meant by electrons moving to lower potential energy? Negative Resistance Zonal Statistics is returning null values in ArcGIS Desktop? Why do distances seem to matter in the Foundation world? Injection into a proper class and choice without regularity A faster way to compute the largest prime factor "Whatever a Russian does, they end up making the Kalashnikov gun"? Are there any similar proverbs in English? Do I need to watch Ant-Man and the Wasp and Captain Marvel before watching Avengers: Endgame? How bug prioritization works in agile projects vs non agile Is this a typo in Section 1.8.1 Mathematics for Computer Science? Drawing a german abacus as in the books of Adam Ries How to have a sharp product image? Creating a chemical industry from a medieval tech level without petroleum Partitioning va...
Read more

Why is system upgrade showing unstable version when upgrading in backend?System Settings > System Upgrade link does not existsComposer Error While upgrading magento version 2.1.6 to 2.2.2How to upgrade magento 1.4.0.0 to above 1.6 versionIssue with upgrading Magento Version from 2.1.7 to 2.1.12Magento 2.2.5: Error on running setup: upgrade after upgrading Magento from 2.2.2 to 2.2.5Are there any Magento Code Release Notes?getting error when upgrading from Magento 2.1.5 to Magento 2.2.6Will the installed third party plugins upgrade when we upgrade Magento version via composerWhy PHP Settings Check and Checking Component Dependency showing error during Magento 2.3 upgrade?Fatal error: Out of memory (in composer) during upgrade Magento2.2.1 to Magento 2.3 when run composer update command

Image
Can a Knock spell open the door to Mordenkainen's Magnificent Mansion? Writing in a Christian voice Would this string work as string? Turning a hard to access nut? New Order #2: Turn My Way Capacitor electron flow How can I, as DM, avoid the Conga Line of Death occurring when implementing some form of flanking rule? How to preserve electronics (computers, ipads, phones) for hundreds of years? Pre-Employment Background Check With Consent For Future Checks Started in 1987 vs. Starting in 1987 Calculate Pi using Monte Carlo What (if any) is the reason to buy in small local stores? How to test the sharpness of a knife? Center page as a whole without centering each element individually Unfrosted light bulb Trouble reading roman numeral notation with flats Why is implicit conversion not ambiguous for non-primitive types? Why would five hundred and five same as one? What is the period/term used describe Giuseppe Arcimboldo's style of painting? Wha...
Read more