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R G PUBLICATION-THE p-BLOCK ELEMENTS-EXERCISE
- Which forms of oxides of nitrogen are para-magnetic?
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- Aluminium is not dissolved in concentrated HNO3 solution. Why?
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- In the brown ring test (for identification of NO3). Write the formula ...
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- Why white phosphorus is less stable than red phosphorus?
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- Name the gas which is used as smoke screen?
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- Bond angle in PH4^+ is higher than that is PH3.
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- In PCl5 the two axial bonds are longer than equitorial bonds why?
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- Write the formula of epson salt.
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- Thermal stability of H2S is more than that of H2Te. Why?
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- What is amphoteric oxide? Give one example.
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- What is the transition temperature of conver-sion of Alpha- sulpher in...
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- Which form of sulpher shows paramagnetic beheavier?
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- Write one chemical test for SO2 gas.
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- Negative electron gain ethalpy of fluorine atom is less than that of c...
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- Write two uses of ClO2.
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- Explain why HI is the strongest reducing agent among the halogens?
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- Explain the bleaching action of Cl2.
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- What is aqua regia?
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- Why interhalogens are more reactive than halogens?
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- Write the formula of the first noble gas compound.
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