Question

Write down the atomic number and mass number each of the element produced when and 92U238 radiates one Alpha particle and then successively two beta particles ?Please tell..​

Answer 1

Answer:

When an alpha particle is emitted from a radioactive substance its atomic number(Z) decreases by 2 and mass number(A) decreases by 4. When β particle is emitted from a radioactive substance its atomic number(Z) increases by 1 and mass number(A) does not change.

Here, Uranium decays to lead its mass no changes to by 24 i.e.

24/4 =6α particles are emitted and hence, its atomic

number changes by 12 but the atomic numbre of Pis 10 this is due to emission of two β particle.

238/92 U→6α4/2+2β0/1 + 214/82Pb.

Explanation:

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Answer 2

Answer:

When an alpha particle is emitted from a radioactive substance its atomic number(Z) decreases by 2 and mass number(A) decreases by 4. When β  particle is emitted from a radioactive substance its atomic number(Z) increases by 1 and mass number(A) does not change.

Here, Uranium decays to lead its mass no changes to by 24 i.e. 

424=6α particles are emitted and hence, its atomic 

number changes by 12 but the atomic numbre of Pb is 10 this is due to emission of two β particle. 

92238U→6α24+2β10+82214Pb

Explanation:

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