Chapter 3, Problem 22A

Interpretation Introduction

Interpretation:

The particle in an atom which is most responsible for the chemical properties of the atom needs to be determined. The location of these particles in the atom needs to be determined.

Concept introduction:

The smallest unit of element is termed as atom, it cannot be further divided. The neutron and protons present together in the nucleus and electrons are found in the outer shell of the atom. The number of electron is same as the number of protons. The subatomic particles are charged except neutrons.

Answer to Problem 22A

The electrons are located at outer side of the nucleus of an atom, it is responsible for the chemical properties of the atom.

Explanation of Solution

An atom has protons, neutron and electron as the subatomic particle. The number of protons present in the nucleus is representing the atomic number of the element. The number of electron and number of protons are equal to stabilized the atom. The chemical nature of an atom is explains by the number of electrons.

Conclusion

The number of protons, neutrons and electrons present in an atom, give the information to calculate atomic number and mass number, and other specific properties are explained by the number of protons and electrons.