Question

What happens to the position of an element in the periodic table when it emits an alpha particle?

• A. changes to $2$ places further
• B. changes to $2$ places earlier
• C. no change
• D. cant say

Answer 1

Answer: (B)

changes to $2$ places earlier

The $\alpha$ particle carries 2 protons.

So when it is emitted, it decreases the Atomic number of particle by 2.

So the element is shifted 2 places earlier in the periodic scale.