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coldgirl [10]
3 years ago
8

How are the elements Neon, Selenium, and Fluorine ordered from most reactive to least reactive?​

Chemistry
1 answer:
Burka [1]3 years ago
4 0

Answer:

selenium, fluorine and neon

Explanation:

the less valence electrons an element has, the more reactive.

selenium has 6 valence electrons

fluorine has 7 valence electrons

neon has 8 valence electrons

So, it is ordered from the least number of valence electrons to the most

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Which statement most completely defines a wave? *
Svetllana [295]

Answer:

A wave transfers energy through a medium or empty space without transporting matter.

Explanation:

  • A wave is a transmission of a disturbance from one point known as the source to another.
  • Waves may transfer energy through a material medium or a vacuum without transporting matter.
  • Waves that transfer energy from one point to another through a material medium are known as mechanical waves.
  • Electromagnetic waves, on the other hand, are those that do not require a material medium for transmission, the transfer of energy is through a vacuum.
  • Waves can also be either transverse or longitudinal waves based on the vibration of particles relative to the direction of wave motion.
4 0
2 years ago
Which is the coal with the highest energy available per unit to burn: lignite, subbituminous, bituminous, or anthracite?
olya-2409 [2.1K]

Answer:

Anthracite

Explanation:

Anthracite produce highest amount of energy than other. It contain 86-97 percent carbon. Bituminous coal contain 45-86 percent carbon.

Subbituminous cola have 35-45 percent carbon while lignite contain 25-35 percent carbon.

Coal is source of many organic materials. It is fossil fuel and form after long period decay of plants. It is formed when trees are buried under earth

about 500 million years ago. The chemical and bacterial reactions take place and plant wood converted into the peat.

Than because of high temperature and pressure inside the earth peat is converted into the coal.

Through other processes it is than used to make the fuels such as coke. coal tar and coal gas.

Coal tar is the source of many organic compounds which are separated through fractional distillation.

About 80% of coal in Pakistan is used to bake the bricks and also used in lime kilns and for domestic purpose.

6 0
3 years ago
Is na2S an ionic compound,covalent compound,or acid
liq [111]

Na2S

Na is a metal, S is a non-metal, so Na2S is an ionic compound.

3 0
3 years ago
What type of chemical reaction is:
Valentin [98]

Answer:

Synthesis

Explanation:

That's the answer to that question

6 0
2 years ago
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Where do we use controlled fission?
sukhopar [10]

Answer: Uranium and plutonium are most commonly used to control fission

Explanation:

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3 years ago
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