Question

among H2O, HCL, 42, MgCl2 which one is ionic compound

Answer 1

HCL is the answer

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Answer 2

$\bold{\mathrm{MgCl}_{2}}$ is an ionic compound.

Explanation:  

• Ionic compound is one which is formed by the exchange of the radicles. Normal the element which has low valency exhibit ionic characters since it is easy for them to gain or to lose electron.  

• In case of magnesium it loses to electrons to form magnesium ion and each of the chlorine gains one of the magnesium ion.  

• Hence the compound magnesium chloride is formed. Since it is an ionic compound it remains in solid state unlike water or Hydrogen chloride.

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