Assertion: Electronegativity is not a measurable quantity. Reason: The electronegativity of any given element is not constant, it varies depending on the element to which it bound.

Question

Assertion: Electronegativity is not a measurable quantity. Reason: The electronegativity of any given element is not constant, it varies depending on the element to which it bound. (A) If both assertion and reason are true and reason is the correct explanation of assertion. (B) If both assertion and reason are true but reason is not the correct explanation of assertion. (C) If assertion is true but reason is false. (D) If both assertion and reason are false.

Tardigrade Admin · Accepted Answer

Electronegativity of an atom is defined as the tendency to pull the shared pair of electrons in bonded atoms.
It is a relative measurement and for any given element, the value of electronegativity is not constant, it varies depending on the element to which it bound.
For example: In

H_{2} O

, since

O

has a higher electron affinity, it has negative oxidation state

(- 2)

and

H

has

+ 1

oxidation state. While in

N a H

,

N a

being metal has the least affinity for electron and thus

H

has an oxidation state of

- 1

and

N a

as

+ 1

.

Q. Assertion : Electronegativity is not a measurable quantity. Reason: The electronegativity of any given element is not constant, it varies depending on the element to which it bound.

If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are true but reason is not the correct explanation of assertion.

If assertion is true but reason is false.

If both assertion and reason are false.

Q. Assertion : Electronegativity is not a measurable quantity.
Reason: The electronegativity of any given element is not constant, it varies depending on the element to which it bound.