Question

Define valency and valence electrons?? define velocity and acceleration?

Answer 1

1. the number of electron that an atom of an element gives away or takes up while forming an ionic bond is called the valency of that element .
2. remaining electron having an atom after sharing in donating the electron is called the valence electron

Answer 2

$\huge\bf{Answer:-}$

The combining power of the elements is named Valency. Accurate knowledge of connectivity is the foundation of all chemistry. In the last years, along with having more knowledge of the nature and properties of liquids, the knowledge of connectivity has also increased. In other words, valency is a number that shows how many electrons an atom gains, or loses or shares when it binds to the atom of its own element or to the atom of another element.