Multiple Choice
Identify the ion that is responsible for the red colour of rubies.
A) Cr+3
B) Cr+4
C) Cr+5
D) Cr+6
E) Cr+7
Correct Answer:
Verified
Correct Answer:
Verified
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Q11: Identify the ion that is responsible for
Q12: Match the following.<br>-mer-fac<br>A)[Cr(en)<sub>3</sub>]<sup>3+</sup><br>B)[Zn(NH<sub>3</sub>)<sub>2</sub>Cl<sub>2</sub>]Br<sub>2 and </sub>[Zn(NH<sub>3</sub>)<sub>2</sub>Br<sub>2</sub>]Cl<sub>2</sub><br>C)[Ni(CN)<sub>2</sub>(OH)<sub>2</sub>]<sup>2-</sup><br>D)[Cr(NH<sub>3</sub>)<sub>3</sub>(CO)<sub>3</sub>]<sup>3+</sup><br>E)[Cu(SCN)<sub>4</sub>]<sup>3- </sup>and<sup> </sup>[Cu(NCS)<sub>4</sub>]<sup>3-</sup>
Q14: Match the following.<br>-cis-trans<br>A)[Cr(en)<sub>3</sub>]<sup>3+</sup><br>B)[Zn(NH<sub>3</sub>)<sub>2</sub>Cl<sub>2</sub>]Br<sub>2 and </sub>[Zn(NH<sub>3</sub>)<sub>2</sub>Br<sub>2</sub>]Cl<sub>2</sub><br>C)[Ni(CN)<sub>2</sub>(OH)<sub>2</sub>]<sup>2-</sup><br>D)[Cr(NH<sub>3</sub>)<sub>3</sub>(CO)<sub>3</sub>]<sup>3+</sup><br>E)[Cu(SCN)<sub>4</sub>]<sup>3- </sup>and<sup> </sup>[Cu(NCS)<sub>4</sub>]<sup>3-</sup>
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Q18: How many unpaired electrons would you expect
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