Chapter 4.3, Problem 15PP

Interpretation Introduction

Interpretation:

Whether the atoms shown in the given figure have the same atomic number or not needs to be determined.

Concept introduction:

Proton is a subatomic particle that carries a positive charge. An electron is a subatomic particle that carries a negative charge.

Answer to Problem 15PP

Yes, the figures have the same atomic number 9.

Explanation of Solution

The number of protons is equal to the atomic number of an atom which identifies the atom of a particular element.

$\text{Atomic number}\text{(Z)=}{\text{Number of electrons (N}}_{\text{e}}\text{)= Number of protons}{\text{(N}}_{\text{p}}\text{) }$

Thus, in the given figure number of electrons is 9, the number of electron will be 9, and hence, the atomic number is also same that is 9, so the element is fluorine.

Conclusion

Hence, the atoms shown in the figure to the right have the same atomic number that is 9.