Which of the following statements is true?

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(C) $A.$ The polarity increases in the order $HI < HBr < HCl < HF$ due to electronegativity differences. $HF$ is more polar than $HBr$,so option $A$ i

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Chemical bond formation takes place when forces of attraction overcome the forces of repulsion

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(C) $A.$ The polarity increases in the order $HI $B.$ The statement that absolutely pure water does not contain any ions is false. Pure water undergoes auto-ionization $(2H_2O \rightleftharpoons H_3O^+ + OH^-)$,resulting in a small concentration of ions.$C.$ Chemical bond formation occurs when the forces of attraction between atoms or ions overcome the forces of repulsion,leading to a stable,lower-energy state. This is true.$D.$ In covalency,electrons are shared between atoms,not transferred. The transference of electrons is characteristic of ionic bond formation. Thus,option $D$ is incorrect.

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