1. Element X has 3 isotopes with masses of 15.990 amu (abundance 99.0%), 14.00 amu (abundance (0.500%) and 17.564 amu (0.500 %). a. Without doing any math, based on the percent abundance values, predict the average isotopic mass. Justify your answer. b. Calculate the average isotopic mass of Element X. SHOW SET UP c. Using your answer from part b), identify Element X from the periodic table: d. How many protons and neutrons are there in the nucleus of the most abundant species of X? How many protons and neutrons are possible for an isotope of X?
1. Element X has 3 isotopes with masses of 15.990 amu (abundance 99.0%), 14.00 amu (abundance (0.500%) and 17.564 amu (0.500 %). a. Without doing any math, based on the percent abundance values, predict the average isotopic mass. Justify your answer. b. Calculate the average isotopic mass of Element X. SHOW SET UP c. Using your answer from part b), identify Element X from the periodic table: d. How many protons and neutrons are there in the nucleus of the most abundant species of X? How many protons and neutrons are possible for an isotope of X?
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter1: The Nature Of Chemistry
Section1.13: The Periodic Table
Problem 1.9E
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