NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXI11:THE P-BLOCK ELEMENTS
316593
The correct group of halide ions which can be oxidised by oxygen in acidic medium is
1 \(\mathrm{Br}^{-}\) and \(\mathrm{I}^{-}\)only
2 \(\mathrm{Cl}^{-}\), \(\mathrm{Br}^{-}\) and \(\mathrm{I}^{-}\)only
3 \({\text{B}}{{\text{r}}^ - }\) only
4 \({{\text{I}}^ - }\) only
Explanation:
Only \({{\text{I}}^ - }\) can be oxidised by oxygen in acidic medium as follows : \(4 \mathrm{I}_{(\mathrm{aq})}^{-}+4 \mathrm{H}_{\text {(aq) }}^{+}+\mathrm{O}_{2(\mathrm{~g})} \rightarrow 2 \mathrm{I}_{2(\mathrm{~s})}+2 \mathrm{H}_{2} \mathrm{O}_{(\mathrm{l})}\)
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316594
Which of the following pairs is not correctly matched?
1 A halogen which is liquid at room temperature-Bromine
2 The most electronegative element-Fluorine
3 The most reactive halogen-Fluorine
4 The strongest oxidising agent-Iodine
Explanation:
The stronger O.A. - Fluorine
CHXI11:THE P-BLOCK ELEMENTS
316595
The bond dissociation energy is highest for
1 \(\mathrm{F}_{2}\)
2 \(\mathrm{Cl}_{2}\)
3 \(\mathrm{Br}_{2}\)
4 \(\mathrm{I}_{2}\)
Explanation:
\(\mathrm{F}_{2}\) has less bond dissociation energy due to small size and high interelectronic repulsions between lone pairs. \(\mathrm{Br}_{2}\) and \(\mathrm{I}_{2}\) have less bond dissociation energies than \(\mathrm{Cl}_{2}\) due to large sizes.
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316596
Which of the following statements about the halogen is correct?
316593
The correct group of halide ions which can be oxidised by oxygen in acidic medium is
1 \(\mathrm{Br}^{-}\) and \(\mathrm{I}^{-}\)only
2 \(\mathrm{Cl}^{-}\), \(\mathrm{Br}^{-}\) and \(\mathrm{I}^{-}\)only
3 \({\text{B}}{{\text{r}}^ - }\) only
4 \({{\text{I}}^ - }\) only
Explanation:
Only \({{\text{I}}^ - }\) can be oxidised by oxygen in acidic medium as follows : \(4 \mathrm{I}_{(\mathrm{aq})}^{-}+4 \mathrm{H}_{\text {(aq) }}^{+}+\mathrm{O}_{2(\mathrm{~g})} \rightarrow 2 \mathrm{I}_{2(\mathrm{~s})}+2 \mathrm{H}_{2} \mathrm{O}_{(\mathrm{l})}\)
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316594
Which of the following pairs is not correctly matched?
1 A halogen which is liquid at room temperature-Bromine
2 The most electronegative element-Fluorine
3 The most reactive halogen-Fluorine
4 The strongest oxidising agent-Iodine
Explanation:
The stronger O.A. - Fluorine
CHXI11:THE P-BLOCK ELEMENTS
316595
The bond dissociation energy is highest for
1 \(\mathrm{F}_{2}\)
2 \(\mathrm{Cl}_{2}\)
3 \(\mathrm{Br}_{2}\)
4 \(\mathrm{I}_{2}\)
Explanation:
\(\mathrm{F}_{2}\) has less bond dissociation energy due to small size and high interelectronic repulsions between lone pairs. \(\mathrm{Br}_{2}\) and \(\mathrm{I}_{2}\) have less bond dissociation energies than \(\mathrm{Cl}_{2}\) due to large sizes.
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316596
Which of the following statements about the halogen is correct?
316593
The correct group of halide ions which can be oxidised by oxygen in acidic medium is
1 \(\mathrm{Br}^{-}\) and \(\mathrm{I}^{-}\)only
2 \(\mathrm{Cl}^{-}\), \(\mathrm{Br}^{-}\) and \(\mathrm{I}^{-}\)only
3 \({\text{B}}{{\text{r}}^ - }\) only
4 \({{\text{I}}^ - }\) only
Explanation:
Only \({{\text{I}}^ - }\) can be oxidised by oxygen in acidic medium as follows : \(4 \mathrm{I}_{(\mathrm{aq})}^{-}+4 \mathrm{H}_{\text {(aq) }}^{+}+\mathrm{O}_{2(\mathrm{~g})} \rightarrow 2 \mathrm{I}_{2(\mathrm{~s})}+2 \mathrm{H}_{2} \mathrm{O}_{(\mathrm{l})}\)
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316594
Which of the following pairs is not correctly matched?
1 A halogen which is liquid at room temperature-Bromine
2 The most electronegative element-Fluorine
3 The most reactive halogen-Fluorine
4 The strongest oxidising agent-Iodine
Explanation:
The stronger O.A. - Fluorine
CHXI11:THE P-BLOCK ELEMENTS
316595
The bond dissociation energy is highest for
1 \(\mathrm{F}_{2}\)
2 \(\mathrm{Cl}_{2}\)
3 \(\mathrm{Br}_{2}\)
4 \(\mathrm{I}_{2}\)
Explanation:
\(\mathrm{F}_{2}\) has less bond dissociation energy due to small size and high interelectronic repulsions between lone pairs. \(\mathrm{Br}_{2}\) and \(\mathrm{I}_{2}\) have less bond dissociation energies than \(\mathrm{Cl}_{2}\) due to large sizes.
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316596
Which of the following statements about the halogen is correct?
316593
The correct group of halide ions which can be oxidised by oxygen in acidic medium is
1 \(\mathrm{Br}^{-}\) and \(\mathrm{I}^{-}\)only
2 \(\mathrm{Cl}^{-}\), \(\mathrm{Br}^{-}\) and \(\mathrm{I}^{-}\)only
3 \({\text{B}}{{\text{r}}^ - }\) only
4 \({{\text{I}}^ - }\) only
Explanation:
Only \({{\text{I}}^ - }\) can be oxidised by oxygen in acidic medium as follows : \(4 \mathrm{I}_{(\mathrm{aq})}^{-}+4 \mathrm{H}_{\text {(aq) }}^{+}+\mathrm{O}_{2(\mathrm{~g})} \rightarrow 2 \mathrm{I}_{2(\mathrm{~s})}+2 \mathrm{H}_{2} \mathrm{O}_{(\mathrm{l})}\)
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316594
Which of the following pairs is not correctly matched?
1 A halogen which is liquid at room temperature-Bromine
2 The most electronegative element-Fluorine
3 The most reactive halogen-Fluorine
4 The strongest oxidising agent-Iodine
Explanation:
The stronger O.A. - Fluorine
CHXI11:THE P-BLOCK ELEMENTS
316595
The bond dissociation energy is highest for
1 \(\mathrm{F}_{2}\)
2 \(\mathrm{Cl}_{2}\)
3 \(\mathrm{Br}_{2}\)
4 \(\mathrm{I}_{2}\)
Explanation:
\(\mathrm{F}_{2}\) has less bond dissociation energy due to small size and high interelectronic repulsions between lone pairs. \(\mathrm{Br}_{2}\) and \(\mathrm{I}_{2}\) have less bond dissociation energies than \(\mathrm{Cl}_{2}\) due to large sizes.
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316596
Which of the following statements about the halogen is correct?
