Question

Define: (a) valency (b) motion​

Answer 1

Explanation:

Valency:- Valency is the combining power of an element.The valency of an element is related to how many electrons are in the outer shell.

Motion:- A change in position of an object with respect to time.

Answer 2

Explanation:

1. the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with.
2. In physics, motion is the phenomenon in which an object changes its position over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time.