We appreciate your visit to Naturally occurring europium Eu consists of two isotopes with masses of 151 and 153 Europium 151 has an abundance of 48 03 and Europium 153. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!
Answer :
152.04 u is the atomic mass of europium.
Given:
The two isotopes of europium(Eu).
Europium-151 has an abundance of 48.03% and Europium-153 has an abundance of 51.97%
To find:
The atomic mass of europium.
Solution:
Mass of Europium-151 = 151 u
The percentage abundance of Europium-151 = 48.03%
The fractional abundance of Europium-151 = 0.4803
Mass of Europium-153 = 153 u
The percentage abundance of Europium-153 = 51.97%
The fractional abundance of Europium-153 = 0.5197
The average atomic mass of Europium = A.M
[tex]A.M=\Sum{\text{Mass of isotope }\times \text{Fractional abundance of isotope}}\\=151u\times 0.4803+153u\times 0.5197=152.0394 u\approx 152.04 u[/tex]
152.04 u is the atomic mass of europium.
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Answer:
151.94 u
Explanation:
The atomic mass of Eu is the weighted average of the atomic masses of its isotopes.
We multiply the atomic mass of each isotope by a number representing its relative importance (i.e., its percent abundance).
The atomic masses of Eu-151 and Eu-153 are 150.92 u and 152.92 u, respectively.
Set up a table for easy calculation.
0.4803 × 150.92 u = 72.472 u
0.5197 × 152.92 u = 79.473 u
TOTAL = 151.94 u
