GENERAL KNOWLEDGE

Detailed explanation-1: -The modern atomic theory establishes the concepts of atoms and how they compose matter. Atoms consist of negatively charged electrons around a central nucleus composed of more massive positively charged protons and electrically neutral neutrons.

Detailed explanation-2: -The modern atomic theory states that atoms of one element are the same, while atoms of different elements are different. This number of protons is so important to the identity of an atom that it is called the atomic number.

Detailed explanation-3: -Therefore, the modern atomic theory and model present the electron in cloud-like orbitals around the nucleus.

Detailed explanation-4: -The Heisenberg uncertainty principle states that we can’t know both the energy and position of an electron. Therefore, as we learn more about the electron’s position, we know less about its energy, and vice versa.