- 1(current)
Q. No.Which of the statements given below is incorrect?
1. \(\mathrm{C l_{2} O_{7 }}\)is an anhydride of perchloric acid
2. \(\mathrm{O_{3}}\) molecule is bent
3. ONF is isoelectronic with \(\mathrm{N O_{2}^{-}}\)
4. \(\mathrm{O F_{2}}\) is an oxide of fluorine
Subtopic: Group 17 - Preparation, Properties & Uses | Group 16 - Preparation, Properties & Uses |
61%
Level 2: 60%+
NEET - 2015
Hints
The variation of the boiling point of the hydrogen halides is in the order HF > HI > HBr > HCl.
The higher boiling point of hydrogen fluoride is explained as:
| 1. | The electronegativity of flourine is much higher than other elements in group |
| 2. | There is strong hydrogen bonding between HF molecules |
| 3. | The bond energy of HF molecules is greater than in other hydrogen halides |
| 4. | The effect of nuclear shielding is much reduced in flourine which polarizes the HF molecule |
Subtopic: Group 17 - Preparation, Properties & Uses |
81%
Level 1: 80%+
NEET - 2015
Hints
The given sequence among the following arrangements that is not strictly according to the property indicated against it.
| 1. | H2O < H2S < H2Se < H2Te : \(\small{\text{increasing} \ p K_{a}\ \text{values}}\) |
| 2. | \(\small{\mathrm{N H_{3} < P H_{3} < A s H_{3} < S b H_{3}} : \text{increasing acidic character}}\) |
| 3. | \(\small{\mathrm{C O_{} < S i O_{} < S n O_{} < P b O_{2}} : \text{increasing oxidising power}} \) |
| 4. | \(\small{\mathrm{H F < H C l < H B r < H I} : \text{increasing acidic strength}} \) |
Subtopic: Group 17 - Preparation, Properties & Uses | Group 16 - Preparation, Properties & Uses | Group 15 - Preparation, Properties & Uses |
80%
Level 1: 80%+
AIPMT - 2012
Hints
Subtopic: Group 17 - Preparation, Properties & Uses |
59%
Level 3: 35%-60%
AIPMT - 2011
Hints
Subtopic: Group 17 - Preparation, Properties & Uses |
85%
Level 1: 80%+
AIPMT - 2009
Hints
- 1(current)
Q. No.
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