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प्रश्न
Among the hydrides of Group-15 elements, which have the lowest boiling point?
उत्तर
The boiling point of group 15 hydrides decreases from ammonia to phosphine and then increases from phosphine to bismuth hydride. Hence, PH3 will have the lowest boiling point
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संबंधित प्रश्न
Write four points of differences between properties of nitrogen and other elements of group 15.
Which of the following group 15 elements forms metallic bonds in an elemental state?
Which of the following has the highest pπ–pπ bonding tendency?
The p-block element of group 15 that forms predominantly basic oxide is _____________.
Which of the following is the strongest reducing agent?
Among the following, which one is a wrong statement.
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. |
Match the items of Columns I and II and mark the correct option.
| Column I | Column II | |
| (A) | Its partial hydrolysis does not | (1) He |
| (B) | It is used in modern diving apparatus | (2) XeF6 |
| (C) | It is used to provide inert atmosphere for filling electrical bulbs |
(3) XeF4 |
| (D) | Its central atom is in sp3d2 hybridisation | (4) Ar |
Account for the following:
Zinc is a comparatively a soft metal, iron and chromium are typically hard.
When a colourless gas is passed through bromine water it decolorise, The gas is:-
