Question

$\mathfrak{ Difference \: between }$
Electrovalency and covalency

• Give answer in points
• Write an appropriate answer
• Write 3 points of both ​

Answer 1

Answer :-

Electrovalency :

• The number of electron or electrons lost or gained by the atom of an element is electrovalency of an element.
• Electrovalency of an element is taking part in the formation of ionic or electrovalent bond.
• It is equal to the charge or cation or anion and positive (+) and negative (-) signs are used to indicate the charge.

Covalency :

• The number of electrons contributed by one atom of the element to the neighbouring atom is called covalency of an element.
• Covalency of an element is taking part in the formation of covalent bond.
• Signs are not used to indicate the value of covalency of an element.

More information :

• Ionic or electrovalent bond - It is defined as the electrostatic force of attraction existing between the anion or anions and cation or cations which is formed by the complete transfer of electron or electrons from an atom of one element to another element. Examples of Ionic compounds are - Sodium chloride, Calcium Oxide, Lithium Hydride etc.
• Covalent bond - It is defined as the force holding atoms together by sharing of electrons which have opposite spins. Examples of Covalent compounds are - Hydrogen chloride, Ammonia, Carbon dioxide etc.

Answer 2

${\large{\bold{\rm{\underline{Required \: Solution}}}}}$

★ About Electrovalency -

• In the Electrovalency there is an electrovalent bond. And this electrovalent bond is also known as Ionic bond.

• What is ionic bond? A bond formed by the complete transfer of one or more that one electron from one atom to other atom is called ionic bond.

• These are positive and negative signs to indicate an electrovalency charge.

★ About Covalency -

• In the Covalency there is a covalent bond present.

• What is covalent bond? A bond formed between two same or different atoms by mutual contribution and sharing the electrons is known as covalent bond.

• Positive and negative signs are. it used to indicate the value of any element's covalency

${\large{\bold{\rm{\underline{More \; knowledge}}}}}$

★ Some properties of ionic compounds -

• Ionic compounds have high melting point and boiling point.

• There compounds are good conductor of electricity in molten state or in water

• These are bad conductor of electricity in solid state

• These compounds are soluble in water

• These compounds are insoluble in non-polar covalent.

★ Some properties of covalent compounds -

• These have high m.p and b.p

• These are directional.

• They are generally soluble in organic solvent.

• They are generally insoluble in water

• They are generally bad conductor of electricity (exception graphites)