What would happen when a solution of potassium chromate is treated with an excess of dilute nitric acid?
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The ground state electronic configuration of CO molecule is |
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Of the following outer electronic configurations of atoms, the highest oxidation stateis achieved by which one of them? |
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Which is the chief ore of copper? |
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Mercury is a liquid metal because |
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The actinoids exhibits more number of oxidation states in general than the lanthanoids. This is because |
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The bonds present in the structure of dichromate ion are |
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Which of the following lanthanoid ions is diamagnetic? (At. nos. Ce = 58, Sm = 62, Eu = 63, Yb = 70) |
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The methods chiefly used for the extraction of lead and tin from their ores are respectively |
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Which do not decolourise KMnO4 aqueous solution? |
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(NH4)2Cr2O7 on heating gives a gas which is also given by |
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