HELP ASAP PLZ

What is the AHsol for LiF it + F-? The lattice energy is -1.036 kJ/mol, the enthalpy of hydration for it is -499 kJ/mol, and
the enthalpy of hydration for F-is-431 kJ/mol. Use AHsol = -A Hat + AHhydr-

A: -968 kJ/mol
B: -106 kJ/mol
C: 106 kJ/mol
D: 1,966 kJ/mol

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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