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garri49 [273]
3 years ago
10

How did the grandmother show her gratitude towards her granddaughter

Chemistry
1 answer:
coldgirl [10]3 years ago
3 0

Answer:

vgffffgggggvghvxgyfdgubvhumigrrdghg

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