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elena55 [62]
2 years ago
7

explain why the crystal structure of barium fluoride, BaF2, differs from that of magnesium fluoride, MgF2

Chemistry
1 answer:
Leto [7]2 years ago
8 0

The crystal structure of barium fluoride BaF₂ and magnesium fluoride MgF₂ is cubic and tetragonal lattice respectively.

There are difference between the cubic and tetragonal lattice of any crystal. For cubic lattice a = b = c and α = β = γ = 90⁰ and for tetragonal lattice a = b ≠ c and α = β = γ = 90⁰ (where a, b and c are the edge length of the lattice and α, β, γ angle of the crystal lattice).

The difference of the structure depends on the size of the ions present in the compound. In BaF₂, the ions are Ba²⁺ and F⁻. In MgF₂, the ions are Mg²⁺ and F⁻.

Although the size of the anion in both the crystal is same, there is a huge difference between the size of the cation, which affect the crystal lattice of the compound.

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What is the difference between an exergonic reaction and an endergonic reaction?
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The correct answer between all the choices given is the third choice or letter C. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

7 0
2 years ago
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3 years ago
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La is element 57 on the periodic table a sample contains 2.82 * 10€25 power atoms of La calculate the amount of LA
vodka [1.7K]

Answer:

n=46.8molLa\\\\m=6.50x10^3gLa

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to calculate both moles and grams of lanthanum by using the Avogadro's number as a relationship of atoms to moles and its atomic mass as a relationship to moles to grams to obtain the following:

n=2.82x10^{25}atomsLa*\frac{1molLa}{6.022x10^{23}atomsLa}=46.8molLa\\\\m=46.8molLa*\frac{138.9gLa}{1molLa}  =6.50x10^3gLa

Regards!

5 0
3 years ago
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