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ASSAM ACADEMIC CENTRE-The p-Block Elements-Example
- Why are elements of 16 group called Chalcogen?
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- Why NO become brown when exposed in air?
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- Why does PCl3 fume in moisture?
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- Name the molecular geometry of XeOF4.
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- Write the structure of Pyrophosphoric acid, H4P2O7.
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- Write two uses of Selenium metal.
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- Why is bond angle of PH3 molecule lesser than in NH3 molecule?
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- Why is white phosphorous more reactive than red phosphorous?
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- Which one has higher electron gain enthalpy with negative sign, sulphu...
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- How will you account for the following: NF3 is an exothermic compound ...
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- How will you account for the following: Among the hydrides of group 16...
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- How will you account for the following: Bleaching of flowers by chlori...
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- How will you account for the following: NCl3 is readily hydrolysed whi...
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- H2S acts only as reducing agent while SO2 acts as an oxidising as well...
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- Fluorine exhibits only+1 oxidation state, whereas other halogens also ...
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- Arrange HClO4, HClO3, HCIO2 and HClO in increasing orders of their Aci...
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- Bond angle in PH4^+ is higher than that is PH3.
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- Give two examples of anomalous behaviour of fluorine?
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- Explain the bleaching action of Cl2.
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- Name two poisonous gases which can be prepared from chlorine gas.
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