Question

1.What is the difference between covalent bond, valency ,valence,.
2.what do you mean by isotopes, isomers,isobars..
please answer it tomorrow is my exam.​

Answer 1

Answer:

see this attachment hope it's helpful to you

Answer 2

Answer:

Explanation:

1. Sharing of an electron pair between two atoms is called covalent bonds

Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency. The valency of an element is related to how many electrons are in the outer shell.

Valence electrons are the electrons in the outermost shell, or energy level, of an atom.

2.different atomic masses and physical properties. Every chemical element has one or more isotopes.

Isomers are compounds that contain exactly the same number of atoms, that is they have exactly the same empirical formula, but differ from each other by the way in which the atoms are arranged.

one of two or more atoms or elements having the same atomic weights or mass numbers but different atomic numbers is called isobars

Hope it helps u !!