Question

Difference Between electrovalent and covalent bonds

Answer 1

ELECTROVALENT ( IONIC BOND)

★ 】 It is formed when there is a complete transfer of electrons from one atom to another
such compound are called ionic compounds.

★】 Their constituent particles are ion

★ 】They have hard solids consisting of ions

★】 these are non - volatile with a high boiling point and melting point

★】 They don't conduct electricity in the solid-state but are known as a good conductor of electricity in liquid, fuse, or molten state

★ 】these compounds are soluble in water

Examples: $NaCl,KCl,MgC{l}_2,CaC{l}_2,MgO.$

COVALENT BOND

★】 this bond is formed when there is sharing of electron between the same or different species atom of an element

★ 】 Their constituent particles are are molecules

★】its compounds are gases liquid or soft solid ( except graphite and diamond)

★】its compounds are volatile with low boiling and low melting point

★ 】they are non-conductor of electricity in a solid, molten state

★】its compounds are insoluble in water

Examples: Methane($C{H}_4$ ), Ammonia ($N{H}_3$), Carbon dioxide ($C{O}_2$), water ($H_{2}O$)