An element of nucleon number P and atomic number Q emits an alpha particle from…

An element of nucleon number P and atomic number Q emits an alpha particle from its nucleus. The resultant numbers of the new element formed are respectively
  • A.
    P – 4 and Q + 2
  • B.
    P – 4 and Q – 2
  • C.
    P + 2 and Q + 2
  • D.
    P + 2 and Q – 2
Correct Answer: Option B
Explanation
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