Group 18 Elements
CHXI11:THE P-BLOCK ELEMENTS

316412 Inert gases have positive electron gain enthalpy. Its correct order is

1 \(\mathrm{He} < \mathrm{Kr} < \mathrm{Xe} < \mathrm{Ne}\)
2 \(\mathrm{He} < \mathrm{Xe} < \mathrm{Kr} < \mathrm{Ne}\)
3 \(\mathrm{He} < \mathrm{Ne} < \mathrm{Kr} < \mathrm{Xe}\)
4 \(\mathrm{Xe} < \mathrm{Kr} < \mathrm{Ne} < \mathrm{He}\)
CHXI11:THE P-BLOCK ELEMENTS

316413 Due to stable electronic configurations
I. These gases exhibit very high ionisation enthalpy
II. These have no tendency to accept the electron.
III. These have large positive values of electron gain enthalpy.
The incorrect set of statements is

1 I, II and III
2 I and II
3 II and III
4 None of these
CHXI11:THE P-BLOCK ELEMENTS

316414 Atomic radii of fluorine and neon in Angstrom
units are respectively given by

1 \(0.72 ; 1.60\)
2 \(1.60 ; 1.60\)
3 \(0.72 ; 0.72\)
4 None
CHXI11:THE P-BLOCK ELEMENTS

316415 Noble gases have very low boiling points because

1 Interatomic forces are negligible
2 Interatomic forces are stronger
3 They are inert
4 They have completely filled valency shell
CHXI11:THE P-BLOCK ELEMENTS

316416 The forces acting between noble gas atoms are:

1 Van der waal's forces
2 Ion-dipole forces
3 London-dispersion forces
4 Magnetic forces
CHXI11:THE P-BLOCK ELEMENTS

316412 Inert gases have positive electron gain enthalpy. Its correct order is

1 \(\mathrm{He} < \mathrm{Kr} < \mathrm{Xe} < \mathrm{Ne}\)
2 \(\mathrm{He} < \mathrm{Xe} < \mathrm{Kr} < \mathrm{Ne}\)
3 \(\mathrm{He} < \mathrm{Ne} < \mathrm{Kr} < \mathrm{Xe}\)
4 \(\mathrm{Xe} < \mathrm{Kr} < \mathrm{Ne} < \mathrm{He}\)
CHXI11:THE P-BLOCK ELEMENTS

316413 Due to stable electronic configurations
I. These gases exhibit very high ionisation enthalpy
II. These have no tendency to accept the electron.
III. These have large positive values of electron gain enthalpy.
The incorrect set of statements is

1 I, II and III
2 I and II
3 II and III
4 None of these
CHXI11:THE P-BLOCK ELEMENTS

316414 Atomic radii of fluorine and neon in Angstrom
units are respectively given by

1 \(0.72 ; 1.60\)
2 \(1.60 ; 1.60\)
3 \(0.72 ; 0.72\)
4 None
CHXI11:THE P-BLOCK ELEMENTS

316415 Noble gases have very low boiling points because

1 Interatomic forces are negligible
2 Interatomic forces are stronger
3 They are inert
4 They have completely filled valency shell
CHXI11:THE P-BLOCK ELEMENTS

316416 The forces acting between noble gas atoms are:

1 Van der waal's forces
2 Ion-dipole forces
3 London-dispersion forces
4 Magnetic forces
CHXI11:THE P-BLOCK ELEMENTS

316412 Inert gases have positive electron gain enthalpy. Its correct order is

1 \(\mathrm{He} < \mathrm{Kr} < \mathrm{Xe} < \mathrm{Ne}\)
2 \(\mathrm{He} < \mathrm{Xe} < \mathrm{Kr} < \mathrm{Ne}\)
3 \(\mathrm{He} < \mathrm{Ne} < \mathrm{Kr} < \mathrm{Xe}\)
4 \(\mathrm{Xe} < \mathrm{Kr} < \mathrm{Ne} < \mathrm{He}\)
CHXI11:THE P-BLOCK ELEMENTS

316413 Due to stable electronic configurations
I. These gases exhibit very high ionisation enthalpy
II. These have no tendency to accept the electron.
III. These have large positive values of electron gain enthalpy.
The incorrect set of statements is

1 I, II and III
2 I and II
3 II and III
4 None of these
CHXI11:THE P-BLOCK ELEMENTS

316414 Atomic radii of fluorine and neon in Angstrom
units are respectively given by

1 \(0.72 ; 1.60\)
2 \(1.60 ; 1.60\)
3 \(0.72 ; 0.72\)
4 None
CHXI11:THE P-BLOCK ELEMENTS

316415 Noble gases have very low boiling points because

1 Interatomic forces are negligible
2 Interatomic forces are stronger
3 They are inert
4 They have completely filled valency shell
CHXI11:THE P-BLOCK ELEMENTS

316416 The forces acting between noble gas atoms are:

1 Van der waal's forces
2 Ion-dipole forces
3 London-dispersion forces
4 Magnetic forces
CHXI11:THE P-BLOCK ELEMENTS

316412 Inert gases have positive electron gain enthalpy. Its correct order is

1 \(\mathrm{He} < \mathrm{Kr} < \mathrm{Xe} < \mathrm{Ne}\)
2 \(\mathrm{He} < \mathrm{Xe} < \mathrm{Kr} < \mathrm{Ne}\)
3 \(\mathrm{He} < \mathrm{Ne} < \mathrm{Kr} < \mathrm{Xe}\)
4 \(\mathrm{Xe} < \mathrm{Kr} < \mathrm{Ne} < \mathrm{He}\)
CHXI11:THE P-BLOCK ELEMENTS

316413 Due to stable electronic configurations
I. These gases exhibit very high ionisation enthalpy
II. These have no tendency to accept the electron.
III. These have large positive values of electron gain enthalpy.
The incorrect set of statements is

1 I, II and III
2 I and II
3 II and III
4 None of these
CHXI11:THE P-BLOCK ELEMENTS

316414 Atomic radii of fluorine and neon in Angstrom
units are respectively given by

1 \(0.72 ; 1.60\)
2 \(1.60 ; 1.60\)
3 \(0.72 ; 0.72\)
4 None
CHXI11:THE P-BLOCK ELEMENTS

316415 Noble gases have very low boiling points because

1 Interatomic forces are negligible
2 Interatomic forces are stronger
3 They are inert
4 They have completely filled valency shell
CHXI11:THE P-BLOCK ELEMENTS

316416 The forces acting between noble gas atoms are:

1 Van der waal's forces
2 Ion-dipole forces
3 London-dispersion forces
4 Magnetic forces
CHXI11:THE P-BLOCK ELEMENTS

316412 Inert gases have positive electron gain enthalpy. Its correct order is

1 \(\mathrm{He} < \mathrm{Kr} < \mathrm{Xe} < \mathrm{Ne}\)
2 \(\mathrm{He} < \mathrm{Xe} < \mathrm{Kr} < \mathrm{Ne}\)
3 \(\mathrm{He} < \mathrm{Ne} < \mathrm{Kr} < \mathrm{Xe}\)
4 \(\mathrm{Xe} < \mathrm{Kr} < \mathrm{Ne} < \mathrm{He}\)
CHXI11:THE P-BLOCK ELEMENTS

316413 Due to stable electronic configurations
I. These gases exhibit very high ionisation enthalpy
II. These have no tendency to accept the electron.
III. These have large positive values of electron gain enthalpy.
The incorrect set of statements is

1 I, II and III
2 I and II
3 II and III
4 None of these
CHXI11:THE P-BLOCK ELEMENTS

316414 Atomic radii of fluorine and neon in Angstrom
units are respectively given by

1 \(0.72 ; 1.60\)
2 \(1.60 ; 1.60\)
3 \(0.72 ; 0.72\)
4 None
CHXI11:THE P-BLOCK ELEMENTS

316415 Noble gases have very low boiling points because

1 Interatomic forces are negligible
2 Interatomic forces are stronger
3 They are inert
4 They have completely filled valency shell
CHXI11:THE P-BLOCK ELEMENTS

316416 The forces acting between noble gas atoms are:

1 Van der waal's forces
2 Ion-dipole forces
3 London-dispersion forces
4 Magnetic forces