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CaHeK987 [17]
3 years ago
12

Use electron configurations to account for the stability of the lanthanide ions Ce⁴⁺ and Eu²⁺.

Chemistry
1 answer:
Citrus2011 [14]3 years ago
7 0

Answer:

Explanation:

 The Ce metal has electronic configuration as follows

[Xe] 4f¹5d¹6s²

After losing 4 electrons , it gains noble gas configuration ,. So Ce ⁺⁴ is stable.

Eu  has electronic configuration as follows

[ Xe ] 4 f ⁷6s²

[ Xe ] 4 f ⁷

Its outermost orbit contains 2 electrons so  Eu²⁺ is stable. Its +3 oxidation state is also stable.

Ce⁺²

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Explanation:

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The molecular formula =C₆H₁₂O₆

<h3>Further explanation</h3>

Given

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The molecular molar mass of 180. g/mol

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H₂O=3.6 g

Required

The molecular formula

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mass C in CO₂ :

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= 1 : 2 : 1

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(30)n=180

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Answer:

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