Answer
409.8k+ views
HintThe melting point of the compound depends mainly on the force of attraction present between the molecules of the component. When the force of attraction between the molecules is high the melting point and the boiling point both get increased. In an ionic compound we have a large array of positive and negative ions which are held by strong electrostatic force of attraction.
Complete solution:
The \[Al{{F}_{3}}\] structure is the ionic structure which is formed by the arrangement of positive ions called cation and negative ions called anions. The ions are held by coulombic forces so they are hard, brittle and strong. The components melt when required energy is transferred to them. The energy overcomes the strong force of attraction and melts the compound. The strength of the ionic bond depends directly on the charge of ions. If the charge is high of the ion then the strength of the ionic bond is high. The \[Si{{F}_{4}}\] molecule is a covalent molecule formed by sharing of electrons between the atoms called covalent bonding. The melting points of covalent compounds are less due to the force present between the particles and that weak force is called Vander Waal force of attraction.
Hence, the correct option is (A).
Note: In solid state, the ions of the compound are able to move freely due to strong force of attraction. This is the reason due to which they do not conduct electricity. But when the same compound is in molten or aqueous state it can conduct electricity as the ions are free to move.
Complete solution:
The \[Al{{F}_{3}}\] structure is the ionic structure which is formed by the arrangement of positive ions called cation and negative ions called anions. The ions are held by coulombic forces so they are hard, brittle and strong. The components melt when required energy is transferred to them. The energy overcomes the strong force of attraction and melts the compound. The strength of the ionic bond depends directly on the charge of ions. If the charge is high of the ion then the strength of the ionic bond is high. The \[Si{{F}_{4}}\] molecule is a covalent molecule formed by sharing of electrons between the atoms called covalent bonding. The melting points of covalent compounds are less due to the force present between the particles and that weak force is called Vander Waal force of attraction.
Hence, the correct option is (A).
Note: In solid state, the ions of the compound are able to move freely due to strong force of attraction. This is the reason due to which they do not conduct electricity. But when the same compound is in molten or aqueous state it can conduct electricity as the ions are free to move.
Recently Updated Pages
Mark and label the given geoinformation on the outline class 11 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
When people say No pun intended what does that mea class 8 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Name the states which share their boundary with Indias class 9 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give an account of the Northern Plains of India class 9 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Advantages and disadvantages of science
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Bimbisara was the founder of dynasty A Nanda B Haryanka class 6 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
10 examples of evaporation in daily life with explanations
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
How do you graph the function fx 4x class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)