Chapter 3.3, Problem 6RQ

Interpretation Introduction

Interpretation: The given table and figure needs to be completed.

Concept Introduction: Every matter is made of chemicals; the importance of chemistry is that it's the study of everything. Chemistry is all about how something interacts to affect the structure, composition, as well as knowing properties of substances.

Answer to Problem 6RQ

A complete figure is:

  

A complete table:

Atomic number of an atom	$11$
Name of the element	Sodium
Symbol of the element	Na
Mass number of the atom	$22.989$
Number of electrons in the atom	$11$

Explanation of Solution

Protons are defined as a positively charged $\left(+ve\right)$ sub-atomic particles/ units found in the nucleus of an atom. Number of Protons are equals to the atomic number. Electron are negatively charged subatomic particles found orbiting the nucleus of an atom. Number of Electron are equals to number of protons. Neutrons are subatomic particles found in the nucleus of an atom which are neutral. Symbol of any chemical is a short hand way to represent any element. It tells us what atom it is. First letter code for a chemical element is always capital.

An atom has a nucleus with a positive charge due to its protons and has electrons in the space surrounding the nucleus at relatively large distance from it. The structure shown in figure is of sodium. So, complete figure is:

  

According to this, a complete table:

Atomic number of an atom	$11$
Name of the element	Sodium
Symbol of the element	Na
Mass number of the atom	$22.989$
Number of electrons in the atom	$11$

Conclusion

Chemical representation of Sodium is Na. Atomic number of an atom, Mass number of the atom and Number of electrons in the atom are $11$ , $22.989$ and $11$ respectively.