Chapter 5.3, Problem 27PP

Interpretation Introduction

Interpretation:

The atom of an element has $13$ electrons. The element and the number of electrons it has in its electron dot structure needs to be determined.

Concept introduction Electron dot structure for an atom is the structure which denotes the valence electrons around the elements.

Answer to Problem 27PP

The name of the element is Aluminum.

There are THREE valence electrons are shown its electron dot structure.

Explanation of Solution

Given: Atom of an element has $13$ electrons

Explanations:

The number of electron indicates that the given element has atomic number $13$ As the atomic number of an element is the number of protons in the nucleus or number of electrons of each atom of that element if it is in neutral state.

Thus,

The atomic number of the element is $13$ and the element is Aluminum

So, its electronic configuration is $\left[Ne\right]3s^{2}3p^1$

From electron configuration now it’s clear that there are three valence electrons. Thus, there are 3 electrons represented in electron dot structure as electron dot structure for an atom is a representation of the valence shell electrons in an atom.

Conclusion

Thus,

The name of the element is Aluminum

There are three valence electrons are shown its electron dot structure.