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STatiana [176]
3 years ago
6

In medical imaging, radioactive substances are sometimes used to help "see" parts of the body.

Chemistry
1 answer:
Kaylis [27]3 years ago
4 0
This is true as some parts cannot be checked but the radioactive substances can be used in x-rays
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Explain in words or using your diagrams how beryllium atoms would react with fluorine atoms.
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Explanation:

To delineate the the nature of the bonds that would be formed between the two elements, let us first write the electronic configuration of the two species;

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  F  = 2, 7

 Beryllium is a metal with two valence electrons whereas fluorine is a halogen with seven valence electrons.

When Be loses two electrons it becomes isoelectronic with He;

                 Be →  Be²⁺ + 2e⁻  

Also, when fluorine gains  an electron, it becomes isoelectronic with Ne;

               F  + e⁻ →  F⁻

This loss and gain of electrons between the two elements creates an electrostatic attraction them and they enter into an electrovalent bond.

      Hence;

           Be²⁺  + 2F⁻ → BeF₂

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For the reaction 2hbr(g)⇌h2(g)+br2(g), k= 2.00×10−19 at 298 k what can be said about this reaction at this temperature? hints fo
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the equilibrium lies far to the left

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