Physics
A radioactive element P emits one α-particle and transforms to a new element Q. What will be the position of the element Q in the periodic table?
- One group to the left of P
- One group to the right of P
- Two groups to the right of P
- Two groups to the left of P
Radioactivity
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Answer
Two groups to the left of P
Reason — The reaction is :
In periodic table elements are arranged in ascending order of atomic number and the atomic number of Q is 2 less than that of P. Hence, position of Q will 2 groups left of P.
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