Single Choice

For univalent elements, the average value of first ionization potential and first electron affinity is equal to its:

Apolarising power
Bcovalent radius
Celectronegativity
Correct Answer
Ddipole moment

Solution

For univalent elements, the average value of first ionization potential and first electron affinity is equal to its electronegativity.
$$\displaystyle \text {Electronegativity } = \dfrac {\text { Ionization potential} + \text {Electron affinity}}{2}$$
This is the formula on Mulliken's scale. On Pauling scale, the formula is
$$\displaystyle \text {Electronegativity } = \dfrac {\text { Ionization potential} + \text {Electron affinity}}{5.6}$$
when ionization potential and electron affinity values are in eV.
$$\displaystyle \text {Electronegativity } = \dfrac {\text { Ionization potential} + \text {Electron affinity}}{2 \times 62.5}$$
when ionization potential and electron affinity values are in kcal/mol.

SIMILAR QUESTIONS

Periodic Classification of Elements

Polarity of a bond can be explained by:

Periodic Classification of Elements

Consider the following changes: $$A\rightarrow A^++e^-: E_1$$ and $$A^+\rightarrow A^{2+}+e^-:E_2$$ The energy required to pull out the two electrons are $$E_1$$ and $$E_2$$ respectively. The correct relationship between two energies would be:

Periodic Classification of Elements

Why is $$sp$$ hybrid orbital more electronegative than $$sp^{2}$$ hybridised orbitals?

Periodic Classification of Elements

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

Periodic Classification of Elements

Define the term ' Electronegativity ' .State its unit.

Periodic Classification of Elements

Electronic configuration of most electronegative element is

Periodic Classification of Elements

Write short notes on : Electronegativity

Periodic Classification of Elements

`Fill in the blank: On Mulliken scale, the average of ionization potential and electron affinity is known as _____.

Periodic Classification of Elements

Give the appropriate term defined by the statements given below: The tendency of an atom to attract electrons towards itself when combined in a covalent compound.

Periodic Classification of Elements

Which is the least electronegative element?

Contact Details