GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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HF
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HI
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HBr
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HCI
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Detailed explanation-1: -Answer: Option B Solution: HF has the highest percentage of ionic character because F has the greatest electronegativity.
Detailed explanation-2: -HF has the highest percentage of ionic character because F has the greatest electronegativity.
Detailed explanation-3: -Hence, the highest % of ionic character is exhibited by CsF.
Detailed explanation-4: -Thus, both H-F and H-I bonds are polar covalent bonds. But, electronegativity values decrease down a group and fluorine and iodine belong to the same group (Group 17) of the periodic table. Thus, fluorine is more electronegative than iodine and so H-F bond will be more polar than H-I bond.
Detailed explanation-5: -BaCl2 has the greatest ionic character, due to greater electronegativity difference between cation and anion and large size of cation.