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Rus_ich [418]
4 years ago
14

Which of the following represents beta decay

Chemistry
1 answer:
Korvikt [17]4 years ago
4 0

Answer:

The reaction representing beta decay is of option C:

 _{64}^{160}\textrm{Gd}\rightarrow _{65}^{160}\textrm{Tb}+_{-1}^0\e  

Explanation:

Beta-decay: In this process, a neutron gets converted into a proton and an electron releasing a beta-particle. The beta particle released carries a charge of -1 units.

 _Z^A\textrm{X}\rightarrow _{Z+1}^A\textrm{Y}+_{-1}^0\beta  

 _{64}^{160}\textrm{Gd}\rightarrow _{65}^{160}\textrm{Tb}+_{-1}^0\e  

Hence, the correct answer is option C.

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The element europium exists in nature as two isotopes: 151eu has a mass of 150.9196 amu, and 153eu has a mass of 152.9209 amu. t
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Two isotopes of europium are 151eu and 153eu

Mass of 151eu = 150.9196 amu

Mass of 153eu = 152.9209 amu

Average atomic mass = 151.96 amu

Let x and y are the relative abundance of two isotopes of europium are 151eu and 153eu

So, x% times 150.9196 + y% times 152.9209 = 151.96

x150.9196 + y152.9209 = 151.96

And x + y = 100% = 1, from here x = 1 – y and y = 1 - x

Solve these equation by substitution,

By replacing x = 1-y, we get

(1-y)150.9196 + y152.9209 = 151.96

150.9196 – 150.9196y + y152.9209 = 151.96

2.0013y = 1.0404

Y =0.5199 = 51.99%

Using the value of y we get,

X = 1-y = 1-51.99 = 0.4801 = 48.01%

<span>So, relative abundance of two isotopes of europium are 151eu and 153eu are 48.01% and 51.99% respectively</span>

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3 years ago
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<span>Nitrogen-14 should be the correct response.</span>
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