Electrovalent compounds have a _____ (low/high) boiling point.

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Solution

Electrovalent compound
These compounds are formed by donating and accepting electrons.
Metal releases the electron and non-metal receives the electron to form an electrovalent bond.
Because of the presence of ions in the molecules, they possess a high intermolecular force of attraction.
Because of this strong force, a high amount of energy is required to break the bond. Hence the boiling and melting points are high.
So, Electrovalent compounds have a high boiling point.

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Similar questions

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. 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 options 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 melting 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) Electrons are getting added to an element Y :

(i) is Y getting oxidized or reduced ?

(ii) what charge will Y migrate to during the process of electrolysis ?

(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.

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

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