Answer this with work

No. an alpha particle is a pair of protons and a pair of neutrons, i.e. a helium

Sorry i dont understand the question can you rephase it?

Ahigh energy (high speed) particle (alpha or beta or neutron) are shot at the target;

Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m