Periodic Trends in Chemical Properties of Elements
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313216 Which one of the following is incorrect?

1 An element which has high electronegativity always has high electron gain enthalpy
2 Electron gain enthalpy is the property of an isolated atom
3 Electronegativity is the property of a bonded atom
4 Both electronegativity and electron gain enthalpy are usually directly related to nuclear charge and inversely related to atomic size
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313239 In a compound XY, the electronegativity difference between X and Y is greater than 1.7, then compound XY is soluble in

1 Benzene
2 \({\rm{CC}}{{\rm{l}}_{\rm{4}}}\)
3 \({{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 \({\rm{C}}{{\rm{S}}_{\rm{2}}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313218 The electronegativity of these following elements increases in the order

1 C, N, Si, P
2 I, Si, C, P
3 \(\mathrm{Si}, \mathrm{P}, \mathrm{C}, \mathrm{N}\)
4 \(\mathrm{Si}, \mathrm{N}, \mathrm{C}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313219 The ionisation enthalpy and electron gain enthalpy of an element are 13.0 eV and 3.8 eV respectively.
Electronegativity on the Mulliken’s scale = 1/2 (13.0+3.8) = 8.4. But since Mulliken’s values are nearly 2.8 times as large as Pauling, therefore, electronegativity of the element on the more commonly used Pauling scale is

1 \({\rm{4}}{\rm{.0}}\)
2 \({\rm{3}}{\rm{.5}}\)
3 \({\rm{3}}{\rm{.0}}\)
4 \({\rm{2}}{\rm{.8}}\)
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313216 Which one of the following is incorrect?

1 An element which has high electronegativity always has high electron gain enthalpy
2 Electron gain enthalpy is the property of an isolated atom
3 Electronegativity is the property of a bonded atom
4 Both electronegativity and electron gain enthalpy are usually directly related to nuclear charge and inversely related to atomic size
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313239 In a compound XY, the electronegativity difference between X and Y is greater than 1.7, then compound XY is soluble in

1 Benzene
2 \({\rm{CC}}{{\rm{l}}_{\rm{4}}}\)
3 \({{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 \({\rm{C}}{{\rm{S}}_{\rm{2}}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313218 The electronegativity of these following elements increases in the order

1 C, N, Si, P
2 I, Si, C, P
3 \(\mathrm{Si}, \mathrm{P}, \mathrm{C}, \mathrm{N}\)
4 \(\mathrm{Si}, \mathrm{N}, \mathrm{C}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313219 The ionisation enthalpy and electron gain enthalpy of an element are 13.0 eV and 3.8 eV respectively.
Electronegativity on the Mulliken’s scale = 1/2 (13.0+3.8) = 8.4. But since Mulliken’s values are nearly 2.8 times as large as Pauling, therefore, electronegativity of the element on the more commonly used Pauling scale is

1 \({\rm{4}}{\rm{.0}}\)
2 \({\rm{3}}{\rm{.5}}\)
3 \({\rm{3}}{\rm{.0}}\)
4 \({\rm{2}}{\rm{.8}}\)
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313216 Which one of the following is incorrect?

1 An element which has high electronegativity always has high electron gain enthalpy
2 Electron gain enthalpy is the property of an isolated atom
3 Electronegativity is the property of a bonded atom
4 Both electronegativity and electron gain enthalpy are usually directly related to nuclear charge and inversely related to atomic size
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313239 In a compound XY, the electronegativity difference between X and Y is greater than 1.7, then compound XY is soluble in

1 Benzene
2 \({\rm{CC}}{{\rm{l}}_{\rm{4}}}\)
3 \({{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 \({\rm{C}}{{\rm{S}}_{\rm{2}}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313218 The electronegativity of these following elements increases in the order

1 C, N, Si, P
2 I, Si, C, P
3 \(\mathrm{Si}, \mathrm{P}, \mathrm{C}, \mathrm{N}\)
4 \(\mathrm{Si}, \mathrm{N}, \mathrm{C}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313219 The ionisation enthalpy and electron gain enthalpy of an element are 13.0 eV and 3.8 eV respectively.
Electronegativity on the Mulliken’s scale = 1/2 (13.0+3.8) = 8.4. But since Mulliken’s values are nearly 2.8 times as large as Pauling, therefore, electronegativity of the element on the more commonly used Pauling scale is

1 \({\rm{4}}{\rm{.0}}\)
2 \({\rm{3}}{\rm{.5}}\)
3 \({\rm{3}}{\rm{.0}}\)
4 \({\rm{2}}{\rm{.8}}\)
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313216 Which one of the following is incorrect?

1 An element which has high electronegativity always has high electron gain enthalpy
2 Electron gain enthalpy is the property of an isolated atom
3 Electronegativity is the property of a bonded atom
4 Both electronegativity and electron gain enthalpy are usually directly related to nuclear charge and inversely related to atomic size
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313239 In a compound XY, the electronegativity difference between X and Y is greater than 1.7, then compound XY is soluble in

1 Benzene
2 \({\rm{CC}}{{\rm{l}}_{\rm{4}}}\)
3 \({{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 \({\rm{C}}{{\rm{S}}_{\rm{2}}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313218 The electronegativity of these following elements increases in the order

1 C, N, Si, P
2 I, Si, C, P
3 \(\mathrm{Si}, \mathrm{P}, \mathrm{C}, \mathrm{N}\)
4 \(\mathrm{Si}, \mathrm{N}, \mathrm{C}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313219 The ionisation enthalpy and electron gain enthalpy of an element are 13.0 eV and 3.8 eV respectively.
Electronegativity on the Mulliken’s scale = 1/2 (13.0+3.8) = 8.4. But since Mulliken’s values are nearly 2.8 times as large as Pauling, therefore, electronegativity of the element on the more commonly used Pauling scale is

1 \({\rm{4}}{\rm{.0}}\)
2 \({\rm{3}}{\rm{.5}}\)
3 \({\rm{3}}{\rm{.0}}\)
4 \({\rm{2}}{\rm{.8}}\)