Chapter 8, Problem 8.31P

(a)

Interpretation Introduction

Interpretation:

The partial(valence-level) orbital diagram, the symbol, group number and period number of the element $\left[\text{He}\right]2s^{2}2p^4$ is to be determined.

Concept introduction:

The partial orbital diagram is the one that shows the distribution of valence electrons only.

A symbol is a code for a chemical element. It usually consists of one or two letters from the Latin alphabet and written with the first letter capitalised.

The group number tells about the group to which the concernrd element belongs and the period number gives information about the period to which the element belongs.

(b)

Interpretation Introduction

Interpretation:

The partial(valence-level) orbital diagram, the symbol, group number and period number of the element $\left[\text{Ne}\right]\text{}3s^{2}3p^3$ is to be determined.

Concept introduction:

The partial orbital diagram is the one that shows the distribution of valence electrons only.

The condensed electronic configuration is a way to write the electronic configuration where the inner shell configurations are compressed to the nearest noble gas configuration and only the valence shell configuration is written in the expanded form.