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Question

5B10 + 2He4 X + 0n1

'X' in the above reaction is


A

7N12

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B

7N13

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C

6B13

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D

6B14

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Solution

The correct option is B

7N13


5B10 + 2He4 X + 0n1

In the above reaction let y be the number of protons of X and z be the mass number of X.

Therefore X can be represented as: yXz

Since total number of protons before and after the reaction will remain same:

Therefore,

5+2=y+0

=> y= 7

Hence X is nitrogen

Similarly, the mass number will also be conserved:

Therefore,

10+4=z+1

=>z=13

So X is 7N13


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