9781422279526

Uranium: INTRODUCTION

Introduction

T ake a close look around you. What do you see? A wall, a cat, a book, yesterday’s lunch dishes. Outside your window, you might see clouds or rain or the sun shining while your heart pumps your blood through- out your body. All of those things, the solids, liquids, and gases around you, are composed of elements of the periodic table. The periodic table is an arrangement of all the naturally oc- curring, and manufactured, elements known to humans at this point in time. There are 92 elements that can be found naturally on Earth and in space. The remaining 26 (and counting) have

WORDS TO UNDERSTAND isotope an atom of a specific element that has a different number of neutrons; it has the same atomic number but a different atomic mass

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