Advertisements
Advertisements
प्रश्न
Arrange the following:
CaH2, BeH2 and TiH2 in order of increasing electrical conductance.
Advertisements
उत्तर
The electrical conductance of a molecule depends upon its ionic or covalent nature. Ionic compounds conduct, whereas covalent compounds do not.
BeH2 is a covalent hydride. Hence, it does not conduct. CaH2 is an ionic hydride, which conducts electricity in the molten state. Titanium hydride, TiH2 is metallic in nature and conducts electricity at room temperature. Hence, the increasing order of electrical conductance is as follows:
BeH2 < CaH2 < TiH2
संबंधित प्रश्न
Among NH3, H2O and HF, which would you expect to have highest magnitude of hydrogen bonding and why?
What properties of water make it useful as a solvent? What types of compound can it (i) dissolve, and (ii) hydrolyse?
Why is it said that-
There is no alternative to water for cleaning purposes.
Sea water is a bad conductor of electricity.
State whether the following statement is true or false.
The substance in which a solute dissolves is called a solvent.
Explain the picture in your own words.
Explain the various properties of water.
Which of the following equations depict the oxidising nature of \[\ce{H2O2}\]?
Which of the following equation depicts reducing nature of \[\ce{H2O2}\]?
Give reasons: Lakes freeze from top towards bottom.
Give reasons: Ice floats on water.
\[\ce{H2O2}\] is a better oxidising agent than water. Explain.
How will you account for 104.5° bond angle in water?
The freezing point of water ______ with an increase in pressure.
Pure water boils at ______ °C at one atmospheric pressure.
Water is circulated around the car engine using the ______ pump and the heat is absorbed.
What are the physical properties of pure water?
