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Electron gain enthalpy is the tendency of an isolated gaseous atom while electronegativity is the tendency to attract the shared pair of electrons in .

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Important Questions on Classification of Elements and Periodicity in Properties

EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

Arrange the following amines in the decreasing order of basicity.

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HARD
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
Which of the following elements have the similar value of electronegativity?
HARD
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
Among alkali metals, which element do you expect to be least electronegative and why?
HARD
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
The ionisation potential and electron affinity of fluorine are 17.42 eV and 3.45 eV respectively. Calculate the electronegativity of fluorine on the Mulliken scale and the Pauling scale:
MEDIUM
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
Correct order of Pauling's electronegativity
HARD
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
Select the correct statement(s).
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
What is the difference between electronegativity and electron gain enthalpy?
MEDIUM
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
Ionisation energies of atoms A and B are 400 and 300 k cal mol-1 respectively. The electron affinities of these atoms are 80.0 and 85.0 k cal mol-1 respectively. Then which is the correct statement regarding electronegativity χ ?
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
If the ionization enthalpy and electron gain enthalpy of an element are 275 and 86 kcal mol-1 respectively, then the electronegativity of the element on the Pauling scale is:
HARD
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
Covalent radius of 82Pb is 1.53 Ao. Calculate its electronegativity at the Alfred-Rochow scale:
HARD
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

Calculate the electronegativity of carbon at Pauling's scale?

Given:

EH-H=104.2 kcal mol-1

EC-C=83.1 kcal mol-1

EC-H=98.8 kcal mol-1

Electronegativity of hydrogen =2.1

MEDIUM
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
Correct order of electronegativity of N,P,C and Si on Pauling scale is:
MEDIUM
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
Calculate the electronegativity of fluorine using the following data.
EH-H=104.2 kcal mol-1,
EF-F=36.6 kcal mol-1,
EH-F=134.6 kcal mol-1
and the electronegativity of H=2.1.
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
If the ionization enthalpy and electron gain enthalpy of an element are 275 and 86 kcal mol-1 respectively, then the electronegativity of the element on the Pauling scale is
MEDIUM
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications

The formation of the oxide ion,   O 2− (g)  requires first an exothermic and then an endothermic step as shown below :

  O(g)+ e − → O − (g);  ΔH°=−142  kJ  mo l −1

  O − (g)+ e − → O 2− (g);  ΔH°=844  kJ  mo l −1

This is because

 
MEDIUM
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
If εC-C=348 kJ mol-1, εC-H=412 kJ mol-1 and εH-H=436 kJ mol-1, the Pauling electronegativity of C is about:
(Given: electronegativity of H=2.1).
MEDIUM
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
If the ionization enthalpy and electron gain enthalpy of an element are 275 and 86 kJ mol-1, respectively, then the electronegativity of the element based on the Pauling scale is:
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
Cotyledons are also called-
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
The correct option with respect to the Pauling electronegativity values of the elements is:
EASY
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Electronegativity and its Applications
Which of the following relation is correct