Direction (Q. Nos. 1- 10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Regarding the properties of hydrogen halides, which is wrong order?a)Melting point order HI> HF > HBr > HCIb)Boiling point order HF > HI > HBr > HCc)Acidic nature HI > HBr > HCI > HFd)Percentage of ionic characterHF > HI > HBr > HCICorrect answer is option 'D'. Can you explain this answer?

Question

Direction (Q. Nos. 1- 10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Regarding the properties of hydrogen halides, which is wrong order?a)Melting point order HI&#62; HF &#62; HBr &#62; HCIb)Boiling point order HF &#62; HI &#62; HBr &#62; HCc)Acidic nature HI &#62; HBr &#62; HCI &#62; HFd)Percentage of ionic characterHF &#62; HI &#62; HBr &#62; HCICorrect answer is option 'D'. Can you explain this answer?

Answer

The correct order of % of ionic character is

Answer

Yes ....d is ccrrct as.....ionic character ...matlab ...comp ki aukat ki vo kitna zyada ....ashik ban sakta hi....hi...matlav kitta tut skata hi....or ye tabhi...possible ...hi ...jab cation or anion ki...sizes me large ...difference ...ho or vo ...badhta ...jay....hence crrct trend is...HI>HBr>HCl>HF

Answer

Explanation:

The correct answer is option 'D' - Percentage of ionic character HF HI HBr HCI.

The order of the properties of hydrogen halides can be determined based on their molecular structure and intermolecular forces.

Melting point order:
- The melting point of a substance depends on the strength of the intermolecular forces.
- The trend in melting points of hydrogen halides follows the order: HI > HBr > HCl > HF.
- This is because as we move down the group in the periodic table, the size of the halogen atom increases, resulting in weaker intermolecular forces and lower melting points.
- Therefore, the correct order of melting points is HI > HBr > HCl > HF.

Boiling point order:
- The boiling point of a substance also depends on the strength of the intermolecular forces.
- The trend in boiling points of hydrogen halides follows the order: HF > HBr > HCl > HI.
- This is because hydrogen bonding, which is a strong intermolecular force, is present in HF due to the high electronegativity difference between hydrogen and fluorine.
- As we move down the group, the strength of hydrogen bonding decreases, resulting in lower boiling points.
- Therefore, the correct order of boiling points is HF > HBr > HCl > HI.

Acidic nature:
- The acidic nature of hydrogen halides is determined by their ability to donate a proton (H+).
- The trend in acidic nature follows the order: HI > HBr > HCl > HF.
- This is because as we move down the group, the acidity of the hydrogen halides increases due to the larger size of the halogen atom, which stabilizes the conjugate base.
- Therefore, the correct order of acidic nature is HI > HBr > HCl > HF.

Percentage of ionic character:
- The percentage of ionic character in a molecule can be determined by calculating the difference in electronegativity between the two atoms.
- The trend in percentage of ionic character follows the order: HCl > HBr > HF > HI.
- This is because as we move across a period in the periodic table, the electronegativity difference between the atoms increases, resulting in a higher percentage of ionic character.
- Therefore, the correct order of percentage of ionic character is HCl > HBr > HF > HI.

Therefore, the wrong order among the given options is option 'D' - Percentage of ionic character HF HI HBr HCI.

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