X, B, C and Z are the elements belonging to $$17th$$ group of Modern periodic table. The correct trend of reducing power of their ions is $$X-$$ $$B-$$ $$C-$$ $$Z-$$. The element ‘Z’ in the sequence is

Question

X, B, C and Z are the elements belonging to $$17th$$ group of Modern periodic table. The correct trend of reducing power of their ions is $$X-$$ > $$B-$$ > $$C-$$ > $$Z-$$. The element ‘Z’ in the sequence is

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Atomic radius….FCl>Br>I;EN ….F>Cl>Br>I;Electron gain enthalpy ….ICl>Br>I>$$Cl-$$>$$F-$$>$$Br-$$>$$I-B$$.D.E….$$Cl2$$>$$Br2$$>$$F2$$>$$I2$$; Due to small size and repulsions between lone pairs on adjacent Fluorine atoms ;IP …..$$I-Cl2$$>$$Br2$$>$$I2$$;Due to high hydration enthalpy of $$F-$$ and low B.D.E of $$F2$$, $$F2$$ is the strongest oxidant and highly reactive;SRP Values of $$E12F2/F-0+2.87$$ V > $$E12Cl2/Cl-0+1.36$$ V > $$E12Br2/Br-0+1.08$$ V > $$E12I2/I-0+0.54$$ V ;Reducing power….$$I-$$ > $$Br-$$ > $$Cl-$$ > $$F-$$ ;Hydration enthalpy…$$F-$$>$$Cl-$$>$$Br-$$>$$I-$$;MP and BP ….$$F2$$

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