Question

If Sb-150 loses an alpha particle, what is left?

Answer 1

This antimony isotope (Sb-150) does not exist, but if we assume it is real and it loses the one alpha particle, it would be according to next scheme:

₁₅₀Sb⁵¹ ----> ₄He² + ₁₄₆In⁴⁹

Thus, the indium isotope is left.