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प्रश्न
Account for the following :
Noble gases have very low boiling points.
उत्तर
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संबंधित प्रश्न
Account for the following :
Reducing character decreases from SO2 to TeO2
What is the action of sodium on arsenic.
Maximum covalency of nitrogen is ______.
The correct decreasing order of basic strength is:
The p-block element of group 15 that forms predominantly basic oxide is _____________.
H2S is more acidic than H2O because ____________.
If chlorine gas is passed through hot NaOH solution, two changes are observed in the oxidation number of chlorine during the reaction. These are :
(i) 0 to +5
(ii) 0 to +3
(iii) 0 to –1
(iv) 0 to +1
Which of the following orders are correct as per the properties mentioned against each?
| (i) | \[\ce{As2O3 < SiO2 < P2O3 < SO2}\] | Acid strength. |
| (ii) | \[\ce{AsH3 < PH3 < NH3}\] | Enthalpy of vapourisation. |
| (iii) | \[\ce{S < O < Cl < F}\] | More negative electron gain enthalpy. |
| (iv) | \[\ce{H2O > H2S > H2Se > H2Te}\] | Thermal stability. |
Which of the following pairs will have same chemical properties?
In NH3 and PH3 the common is:-
