Question

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Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

1) In the uranium element,

Atomic number,z=92.

Atomic mass,A=238.

so, No of protons or electrons=z=92.

No of neutrons,=A-Z=238-92=146.

2) Let the percentage of

isotope

<br>

The percentage of

isotope

<br> From the above data, the average atomic mass of

<br> But the given average atomic mass of

<br>

<br>

<br>

<br>

Percentage of

isotope

, Percentage of

isotope.