Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
12th Edition
ISBN: 9780135755785
Author: Gerald Audesirk, Teresa Audesirk
Publisher: PEARSON+
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Chapter 2, Problem 1RQ
Summary Introduction

To determine:

The number of neutrons present in oxygen, hydrogen and nitrogen.

Introduction:

The smallest unit of an element is called as an atom. An atom is comprised of “protons, neutrons, and electrons”. Each atom present in an element contains all the chemical properties of an element. The whole charge of an atom is neutral, because of the presence of positively charged particles called as proton and negatively charged particles called electrons.

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Iodine has 37 known isotopes.  Therefore, the atomic mass has a range of 108-144 amu. Which of the following statements concerning iodine is correct? A) The isotopes of iodine have between 55 and 91 protons. B) An atom of iodine can have between 55 and 91 neutrons. C) The isotopes of iodine will always have the same number of neutrons, but the protons can vary. D) The isotopes of iodine have between 108 and 144 neutrons, but the number of protons will not vary.
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Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)

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