Fill in the blanks from the choices given below:
Electrovalent compounds have _____ (low/high) melting point.

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Solution

The chemical bond that is formed by the transfer of electrons from one atom to another is termed an ionic bond. It is formed when one of the atoms can lose electrons to attain inert or noble gas electronic configuration and the other atom needs electrons to acquire the noble gas configuration.
Compounds in which atoms are connected to each other via ionic bonds are termed ionic or electrovalent compounds. For example, Sodium chloride $(NaCl)$ .
In electrovalent compounds, the atom that loses electrons form cations (positively charged species) while the atom that gains electrons forms anions (negatively charged species). These charged species interact with each other via strong electrostatic forces.
Due to the presence of strong electrostatic forces, the melting and boiling points of ionic or electrovalent compounds are very high.
Hence, electrovalent compounds have a high melting point.

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Similar questions

Q. Fill in the blanks from the choices given below:
(i) In covalent compounds, the bond is formed due to the ________ (sharing/transfer) of electrons.
(ii) Electrovalent compounds have a ________ (low/high) boiling point.
(iii) A molecule of _________ contains a triple bond (hydrogen, ammonia, nitrogen).

(a) Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the choices (a), (b), (c) and (d) given below:
(i) The type of bonding in X will be:
(a) ionic
(b) electrovalent
(c) covalent
(d) molecular
(ii) X is likely to have a:
(a) low melting point and high boiling point
(b) high melting point and low boiling point
(c) low melting point and low boiling point
(d) high milting point and high boiling point
(iii) In the liquid state, X will:
(a) become ionic
(b) be an electrolyte
(c) conduct electricity
(d) not conduct electricity

(b) (i) Acids dissolve in water to produce positively charged ions. Draw the structure of these positive ions.
(ii) Explain, why carbon tetrachloride does not dissolve in water?
(iii) Elements Q and S react together to form an ionic compound. Under normal conditions, which physical state will the compound QS exist in?
(iv) Can Q and S, both be metals? Justify your answer.

Explain the following :

(a) Electrovalent compounds conduct electricity in molten or aqueous state.

(b) Electrovalent compounds have a high melting point and boiling point while covalent compounds have low melting and boiling points.

(d) Atoms combine by transfer and sharing of electrons (s).

(e) An element has atoms with different mass number.

Q. Explain why:
(a) covalent compounds have generally low melting points.
(b) ionic compounds have generally high melting points.

Electrovalent compounds have ______ (high/low) melting points.

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Fill in the blanks from the choices given below:Electrovalent compounds have _____ (low/high) melting point.

Fill in the blanks from the choices given below:
Electrovalent compounds have _____ (low/high) melting point.