Which of the following properties changes with valency?

Correct option is A

The correct answer is (a) Equivalent weight.
· Equivalent weight is a property that changes with the valency of an element.
· It is calculated by dividing the atomic or molecular weight of an element or compound by its valency (the number of electrons an atom can gain, lose, or share).
· Since valency directly affects the calculation of equivalent weight, any change in valency will result in a change in the equivalent weight of a substance.
Additional Knowledge:
· Density: Density is a property defined as mass per unit volume and does not change with valency. It is an intrinsic property dependent on the material's composition and structure.
· Volume: Volume is a measure of the space occupied by a substance. It is not influenced directly by the valency of the element.
· Pressure: Pressure, particularly in gases, is governed by factors such as volume, temperature, and the number of particles (Boyle's and Charles's laws). It is unrelated to the valency of an element.