Determine the number of valence electrons for the following: [kr] 5s2 4d6
A)5
B)2
C)4
D)7
E)8
F)6

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24-01-2021
Chemistry

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Determine the number of valence electrons for the following: [kr] 5s2 4d6
A)5
B)2
C)4
D)7
E)8
F)6

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ihlester ihlester · Answer 1 · 2021-01-24T07:22:40+01:00

Answer: B) 2 (as indicated by electron distribution shown), but taking into account the real properties of this element, 4,7,8 also occur (see below).

Explanation:

This is the electron complement/atomic number of ruthenium, which actually has the structure [Kr] 5s1 4d7

Nevertheless, Ru does not form Ru(I) compounds and few Ru(II) compounds (RuCl2, RuBr2, RuI2). It also forms Ru(III)Cl3 and a larger number of Ru(IV) compounds, e.g. RuO2, RuS2. It also forms RuO4

Determine the number of valence electrons for the following: [kr] 5s2 4d6 A)5 B)2 C)4 D)7 E)8 F)6

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Otras preguntas

Determine the number of valence electrons for the following: [kr] 5s2 4d6
A)5
B)2
C)4
D)7
E)8
F)6