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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
- Account for the following: PCl5 is more covalent than PCl3 .
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- Express 1160 in roman numbers.
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- Express 1125 in roman numbers.
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- Bi (V) is a stronger oxidising agent than Sb (V). Why ?
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- Answer the following question in one word- Coins we use are made up of...
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- Answer the following statement in one word- Various idols and parts of...
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- Draw the molecular structure of the following : XeF4
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- Draw the structures of the following compound : N2O5
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- Write the structural difference between white P and red P.
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- Explain: Electron gain enthalpy of chlorine is more negative than fluo...
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- Given reason: H3PO4 is triprotic acid but H3PO3 is diprotic acid. Why?
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- Give two methods of preparation of dioxygen in laboratory and give its...
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- What happens when PCl5 is heated?
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- Complete the following reaction : 4Al+ 3 O2 rarr
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- Why is H2S less acidic than H2 Te ?
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- Describ chemistry of manufacture of nitric acid by Ostwald's process.
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- Why sulphuric acid is oily and viscous liquid ?
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- Molecular nitrogen N2 is not particularly reactive. Explain
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- Nichrome has the following composition-
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- Name any five oxoacids of phosphorus and write their formulas .
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