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
Verified Correct Answer: B.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #35784)