CAMPBELL BIOLOGY-MASTERING BIO.ACCESS
CAMPBELL BIOLOGY-MASTERING BIO.ACCESS
12th Edition
ISBN: 9780136486787
Author: Urry
Publisher: SAVVAS L
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Chapter 2, Problem 6TYU
Summary Introduction

To examine: The 18O isotope of oxygen.

Introduction: An atom consists of electrons (e), protons (p) and neutrons (n). Different atoms have specific numbers of electrons, protons and neutrons. The electron and proton are negatively and positively charged respectively. Neutron has no charge. Nucleus of an atom contains protons and neutrons that constitute the mass of an atom. Electrons revolve around the nucleus in their orbit. The atomic number of an element is the number of protons in the nucleus of its atoms. In a neutral atom, the number of protons and electrons is equal. Thus, the number of electrons present in a neutral atom is equal to its atomic number. An isotope of an atom differs from neutron numbers and therefore by mass.

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