In which of these ions is the halogen in its highest oxidation state? [mmc-1]
- IO4-
- ClO3-
- BrO2-
- IO-
In which of these ions is the halogen in its lowest oxidation state? [mmc-2]
- IO4-
- ClO3-
- BrO2-
- IO-
In which of these ions is the halogen in a +5 oxidation state? [mmc-3]
- IO4-
- ClO3-
- BrO2-
- IO-
In which of these ions is the halogen in a +3 oxidation state? [mmc-4]
- IO4-
- ClO3-
- BrO2-
- IO-
In the electrolytic refining of copper, which of the following electrode processes happens at the cathode? [mmc-5]
- Cu+(aq)+ e- ==> Cu(s)
- Cu2+(aq)+ 2e- ==> Cu(s)
- Cu(s) ==>Cu+(aq)+ e-
- Cu(s) ==>Cu2+(aq)+ 2e-
In the electrolytic refining of copper, which of the following electrode processes happens at the anode? [mmc-6]
- Cu+(aq)+ e- ==> Cu(s)
- Cu2+(aq)+ 2e- ==> Cu(s)
- Cu(s) ==>Cu+(aq)+ e-
- Cu(s) ==>Cu2+(aq)+ 2e-
Which of the following electron configurations corresponds to a Noble Gas? [mmc-7]
- [Ne] 3s2 3p6 3d10 4s2 4p6
- [Ne] 3s2 3p6 3d8 4s2
- [Ne] 3s2 3p5
- [Ne] 3s2 3p6 3d10 4s2
Which of the following electron configurations corresponds to a halide ion? [mmc-8]
- [Ne] 3s2 3p6 3d10 4s2 4p6
- [Ne] 3s2 3p6 3d8 4s2
- [Ne] 3s2 3p5
- [Ne] 3s2 3p6 3d10 4s2
Which of the following electron configurations corresponds to a stable s block metal ion? [mmc-9]
- [Ne] 3s2 3p6 3d10 4s2 4p6
- [Ne] 3s2 3p6 3d8 4s2
- [Ne] 3s2 3p5
- [Ne] 3s2 3p6 3d10 4s2
Which of the following electron configurations corresponds to a Transition Metal? [mmc-10]
- [Ne] 3s2 3p6 3d10 4s2 4p6
- [Ne] 3s2 3p6 3d8 4s2
- [Ne] 3s2 3p5
- [Ne] 3s2 3p6 3d10 4s2
Which of the following electron configurations corresponds to a 3d block element? [mmc-11]
- [Ne] 3s2 3p6 3d10 4s2 4p6
- [Ne] 3s2 3p6 3d8 4s2
- [Ne] 3s2 3p5
- [Ne] 3s2 3p6 3d10 4s2
Which of the following electron configurations corresponds to a halogent? [mmc-12]
- [Ne] 3s2 3p6 3d10 4s2 4p6
- [Ne] 3s2 3p6 3d8 4s2
- [Ne] 3s2 3p5
- [Ne] 3s2 3p6 3d10 4s2
Which of the following electron configurations corresponds to an s block element? [mmc-13]
- [Ne] 3s2 3p6 3d10 4s2 4p6
- [Ne] 3s2 3p6 3d8 4s2
- [Ne] 3s2 3p5
- [Ne] 3s2 3p6 3d10 4s2
Which of the following electron configurations corresponds to a group 2 element? [mmc-14]
- [Ne] 3s2 3p6 3d10 4s2 4p6
- [Ne] 3s2 3p6 3d8 4s2
- [Ne] 3s2 3p5
- [Ne] 3s2 3p6 3d10 4s2
What is the oxidation state of chlorine in NaOCl? [msa-1]
What is the oxidation state of bromine in KBrO4? [msa-2]
What is the oxidation state of nitrogen in NaNO2? [msa-3]
What is the oxidation state of chromium in K2Cr2O7? [msa-4]
What is the oxidation state of copper in Cu2O? [msa-5]
What is the oxidation state of carbon in COCl2? [msa-6]
What is the oxidation state of phosphorus in the ion PO43-? [msa-7]
What is the oxidation state of nitrogen in Li3N? [msa-8]
What is the oxidation state of chlorine in SO2Cl2? [msa-9]
What is the oxidation state of xenon in XeO2F2? [msa-10]
What is the oxidation state of sulphur in SO2Cl2? [msa-11]
How many grams of copper can be extracted from 20g of copper(II) oxide, CuO? (atomic masses: Cu=64, O=16) [msa-12]