Curium-242 when bombarded with an alpha particle( ₂He⁴),two products are formed,one is neutron and other one is californium - 245.
²⁴²Cm₉₆ + ⁴He₂ -----> ²⁴⁵Cf₉₈ + ¹n₀
total mass number = 242 + 4(left side) = 245 + 1 (right side)
total atomic number = 96 + 2(left side) = 98 + 0 (right side)
Since the other product must have atomic number 98 its californium and it must have mass number 245(as total mass number must be same on either sides),the correct option is Californium - 245.
