Question

Describe yellow arsenic​

Answer 1

Answer:

The element name comes from the ancient Persian word Zarnikh, which means "yellow orpiment." Orpiment is arsenic trisulfide, a mineral that resembles gold. The Greek word "arsenikos" means "potent." Arsenic was known to ancient man and important in alchemy.

Explanation:

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Answer 2

Answer:

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Home Periodic table Elements Arsenic

Arsenic - As

Chemical properties of arsenic - Health effects of arsenic - Environmental effects of arsenic

Atomic number

33

Atomic mass

74.9216 g.mol -1

Electronegativity according to Pauling

2.0

Density

5.7 g.cm-3 at 14°C

Melting point

814 °C (36 atm)

Boiling point

615 °C (sublimation)

Vanderwaals radius

0.139 nm

Ionic radius

0.222 nm (-2) 0,047 nm (+5) 0,058 (+3)

Isotopes

8

Electronic shell

[ Ar ] 3d10 4s2 4p3

Energy of first ionisation

947 kJ.mol -1

Energy of second ionisation

1798 kJ.mol -1

Energy of third ionisation

2736 kJ.mol -1

Standard potential

- 0.3 V (As3+/ As )

Discovered by

The ancients

Arsenic - As

Arsenic

Arsenic appears in three allotropic forms: yellow, black and grey; the stable form is a silver-gray, brittle crystalline solid. It tarnishes rapidly in air, and at high temperatures burns forming a white cloud of arsenic trioxide. Arsenic is a member of group Va of the periodic table, which combines readily with many elements.

The metallic form is brittle, tharnishes and when heated it rapidly oxidizes to arsenic trioxide, which has a garlic odor. The non metallic form is less reactive but will dissolve when heated with strong oxidizing acids and alkalis.

Applications

Arsenic compounds are used in making special types of glass, as a wood preservative and, lately, in the semiconductor gallium arsenade, which has the ability to convert electric current to laser light. Arsine gas AsH3, has become an important dopant gas in the microchip industry, although it requires strict guidelines regarding its use because it is extremely toxic.

During the 18th, 19th, and 20th centuries, a number of arsenic compounds have been used as medicines; copper acetoarsenite was used as a green pigment known under many different names.

Arsenic in the environment

Arsenic can be found naturally on earth in small concentrations. It occurs in soil and minerals and it may enter air, water and land through wind-blown dust and water run-off. Arsenic in the atmosphere comes from various sources: vulcanoes release about 3000 tonnes per year and microorganisms release volatile methylarsines to the extent of 20.000 tonnes per year, but human activity is responsible for much more: 80.000 tonnes of arsenic per year are released by the burning of fossil fuels.

Despite its notoriety as a deadly poison, arsenic is an essential trace element for some animals, and maybe even for humans, although the necessary intake may be as low as 0.01 mg/day.

Arsenic is a component that is extremely hard to convert to water-soluble or volatile products. The fact that arsenic is naturally a fairly a mobile component, basically means that large concentrations are not likely to appear on one specific site. This is a good thing, but the negative site to it is that arsenic pollution becomes a wider issue because it easily spreads. Arsenic cannot be mobilized easily when it is immobile. Due to human activities, mainly through mining and melting, naturally immobile arsenics have also mobilized and can now be found on many more places than where they existed naturally. hope you understand . please follow me and mark it brainly.