A chemical bond in which an electron is transferred from one atom to another in which the atoms form
, is termed an
bond.
A. Electron; covalent
B. Ions; ionic bond
C. lons; covalent bond
D. Ions; hydrogen bond
E. None of the above

According to arrhenius theory of acid and bases, an acid is a proton donor, while base donates hydroxyl ions. further, acid and base reacts to form salt and water.consider following example.hcl    +      h2o          →      cl-          +      h3o+here, hcl has donated a proton, hence it is an acid.now consider following reactionhcl      +      naoh            ↔      nacl      +        h2oin this reaction, hcl donates proton, hence it is acid. on other hand, naoh donates hydroxyl ion (i.e. hence it is a base.   

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