In the formation of electrovalent compounds electrons are transferred from one element to another. How are electrons involved in the formation of a covalent compound?

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Solution

In Covalent compounds, Electrons are shared between the atoms of two or more elements.
1. The chemical bond that is formed between two combining atoms by mutual sharing of one or more pairs of electrons is called a covalent bond and the compound formed due to this bond is called a covalent compound.
2. They have weak intermolecular forces of attraction.
3. They have low melting and boiling point as compared to ionic compounds.

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Similar questions

(a) Name the charged particles which attract one another to form electrovalent compounds.

(b) In the formation of electrovalent compounds, electrons are transferred from one element to another. How are electrons involved in the formation of a covalent compounds ?

(c) The electronic configuration of nitrogen is (2, 5). How many electrons in the outer shell of a nitrogen atom are not involved in the formation of a nitrogen molecule ?

(d) In the formation of magnesium chloride (by direct combination between magnesium and chlorine), name the substance that is oxidized and the substance that is reduced.

(a) Name the charged particles which attract one another to form electrovalent compounds.
(b) In the formation of electrovalent compounds, electrons are transferred from one element to another. How are electrons involved in the formation of a covalent compound?
(c) The electronic configuration of N₂ is 2, 5. How many electrons in the outer shell of a N atom are not involved in the formation of a nitrogen molecule?
(d) In the formation of magnesium chloride (by direct combination between magnesium and chlorine) name the substance that is oxidised and the substance that is reduced.

Q. (a) Show on a diagram the transfer of electrons between the atoms in the formation of MgO.
(b) Name the solvent in which ionic compounds are generally soluble.
(c) Why are aqueous solutions of ionic compounds able to conduct electricity?

Fill in the blanks in the following sentences:
(i) Two atoms of the same element combine to form a molecule. The bond between them is known as .. bond.
(ii) Two chlorine atoms combine to form a molecule. The bond between them is known as....
(iii) In the formation of an oxygen molecule, ... electrons are shared by each atom of oxygen.
(iv) In the formation of a $N_{2}$ molecule, ... electrons are shared by each atom on nitrogen.
(v) The number of single covalent bonds in $C_{2} H_{2}$ molecule are....
(vi) Melting points and boiling points of ionic compounds are generally ... Than those of covalent compounds.

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).

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