This question does not seem to make sense in its present wording.
If you are asking what are the three basic particles that make up an atom, they are the electron, the proton and the neutron.
The protons and neutrons form the nucleas (center) of the atom and are considered to comprise most or all of its weight (mass). The electrons circle around the nucleas in orbits called "shells" and are considered to be responsible for the reactivity of the atom with itself or with other atoms. They contribute nothing, or nearly nothing, to the Atomic Mass.
No, but compounds are made from atoms.
No, but compounds are made from atoms.
Organic compounds always contain a carbon atom.
crystalline compounds.
Salts are compounds, not single atoms.
0 in the elemental form, +3 in its compounds
0 in the elemental form, +3 in its compounds
Inorganic compounds in general.
Yes it could by the transfer of electrons (as in ionic compounds) or by sharing electrons (as in covalent compounds).
Every type of atom can form compounds.
No, but compounds are made from atoms.
molecules or compounds
No, but compounds are made from atoms.
0 in elemental form +3 in most of its stable compounds
Carbon is present in all organic compounds.
carbon
carbon