The natural uranium consists of three isotopes in the ratio 99.274 : 0.720 : 0.006. Find the average atomic mass of uranium.
noirrelevant answers
Answers
Answer:
Naturally occurring uranium is composed of three major isotopes, uranium-238 (99.2739–99.2752% natural abundance), uranium-235 (0.7198–0.7202%), and uranium-234 (0.0050–0.0059%).[2] All three isotopes are radioactive (i.e., they are radioisotopes), and the most abundant and stable is uranium-238, with a half-life of 4.4683×109 years (close to the age of the Earth
Answer:
___YOUR CORRECT ANSWER___
Explanation:
Answer
Correct option is
A
86
Activity(A)=
half life ln2
×Number of particles(N) −(1)
Given that for 92
U 234, 92
U 235 and 92
U 238 :
The number of particles are in ratio, 0.0006:0.71:99.28 and half-life are in ratio, 2.5:7100:45000
From the equation (1), the activities are in ratio: 2.4:1:22
So, percentage share in total activity of natural uranium are 9.45%, 3.94% and 86.61% for the
92
U 234 , 92
U 235 and 92
U 238
respectively.
✌❣✨ KEEP SMILING ✨❣✌
