Chapter 5, Problem 5.119SP

Interpretation Introduction

Interpretation:

The reason of decrease in the atomic radii across a period of the periodic table needs to be explained.

Concept introduction:

An atom consists of three sub-atomic particles; electrons, protons and neutrons. The Bohr’s model purposed the concept of energy levels around the nucleus. It was first most accepted atomic model. The quantum mechanical model is based on certain concepts like quantum numbers, Heisenberg uncertainty principle, etc. The atomic structure can be described with the help of these principals and atomic models.