316619
Identify the correct decreasing order of bond dissociation enthalpy.
1 \(\mathrm{F}-\mathrm{F}>\mathrm{Cl}-\mathrm{Cl}>\mathrm{Br}-\mathrm{Br}>\) I - I
2 I - I \(>\mathrm{Br}-\mathrm{Br}>\mathrm{Cl}-\mathrm{Cl}>\mathrm{F}-\mathrm{F}\)
3 \(\mathrm{Cl}-\mathrm{Cl}>\mathrm{F}-\mathrm{F}>\mathrm{Br}-\mathrm{Br}>\) I - I
4 \(\mathrm{Cl}-\mathrm{Cl}>\mathrm{Br}-\mathrm{Br}>\mathrm{F}-\mathrm{F}>\) I - I
Explanation:
The decreasing order for the bond dissociation enthalpy of halogen molecules is \({\text{C}}{{\text{l}}_{\text{2}}}{\text{(58 K cal / mol) > B}}{{\text{r}}_{\text{2}}}{\text{(46 K cal / mol) > }}\) \({{\text{F}}_{\text{2}}}{\text{ (38 K cal / mol) > }}{{\text{I}}_{\text{2}}}{\text{(36 K cal / mol)}}\)
MHTCET - 2021
CHXI11:THE P-BLOCK ELEMENTS
316620
The valence shell electronic configuration of group 17 elements is given as \({\mathrm{\mathrm{ns}^{2} n p^{X}}}\). The value of ' \({\mathrm{X}}\) ' is ____ .
1 7
2 5
3 6
4 4
Explanation:
The valence shell electronic configuration of group 17 elements is given as \({\mathrm{n s^{2} n p^{5}}}\). Hence, the value of ' X ' is 5 .
NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXI11:THE P-BLOCK ELEMENTS
316619
Identify the correct decreasing order of bond dissociation enthalpy.
1 \(\mathrm{F}-\mathrm{F}>\mathrm{Cl}-\mathrm{Cl}>\mathrm{Br}-\mathrm{Br}>\) I - I
2 I - I \(>\mathrm{Br}-\mathrm{Br}>\mathrm{Cl}-\mathrm{Cl}>\mathrm{F}-\mathrm{F}\)
3 \(\mathrm{Cl}-\mathrm{Cl}>\mathrm{F}-\mathrm{F}>\mathrm{Br}-\mathrm{Br}>\) I - I
4 \(\mathrm{Cl}-\mathrm{Cl}>\mathrm{Br}-\mathrm{Br}>\mathrm{F}-\mathrm{F}>\) I - I
Explanation:
The decreasing order for the bond dissociation enthalpy of halogen molecules is \({\text{C}}{{\text{l}}_{\text{2}}}{\text{(58 K cal / mol) > B}}{{\text{r}}_{\text{2}}}{\text{(46 K cal / mol) > }}\) \({{\text{F}}_{\text{2}}}{\text{ (38 K cal / mol) > }}{{\text{I}}_{\text{2}}}{\text{(36 K cal / mol)}}\)
MHTCET - 2021
CHXI11:THE P-BLOCK ELEMENTS
316620
The valence shell electronic configuration of group 17 elements is given as \({\mathrm{\mathrm{ns}^{2} n p^{X}}}\). The value of ' \({\mathrm{X}}\) ' is ____ .
1 7
2 5
3 6
4 4
Explanation:
The valence shell electronic configuration of group 17 elements is given as \({\mathrm{n s^{2} n p^{5}}}\). Hence, the value of ' X ' is 5 .