which of the following statements is true of solvents?

they are present in smaller amounts in a solution.

water is the main solvent in the body.

they are usually solids.

they are tiny particles.

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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i do not get it   at all