Chapter 2, Problem 18QRT

Interpretation Introduction

Interpretation:

Uranium $-235$ and Uranium $-238$ differ in terms of subatomic particles.  For which subatomic particles is the number different has to be identified.  Also, by how much it is differed has to be given.

Concept Introduction:

Isotopes have same number of protons and different number of neutrons.  Different isotopes of same element have different number of neutrons, they do not have the same mass because the neutron number is different.

Example:

Isotopes of magnesium are:

  ${}_{\text{12}}^{\text{12}}{\text{Mg , }}_{\text{12}}^{\text{13}}{\text{Mg and }}_{\text{12}}^{\text{14}}\text{Mg}$