electron
Electricity can flow due to the movement of ANY charged particle. A current in metals is due to the movement of electrons, and this is the most common case for a current. However, a current can also be carried by holes, by positive or negative ions, etc.
No such particle exists. All particles with charge also have mass -- no exceptions. Every particle with zero mass also has zero charge -- no exceptions.
The photon is responsible for mediating the electromagnetic force. This includes both electricity and magnetism (both of which are manifestations of the electromagnetic force.) Interestingly, the photon is also the particle responsible for light, which is an electromagnetic wave.
Electron
Neutrons are particles of no charge. Electrons have negative charge.
No, the other way round: An electron is a negatively charged particle. There are also other other negatively charged particles.
the decay of neutron into proton givesz small praticle called negative beta particle
No; many aqueous solutions can conduct electricity because the ions (positive and negative particles) within the solution can easily carry charge through the solution. Also, because an aqueous solution is a liquid, movement of the electricity carried by charged particles is easier since particles can slide past each other (unlike in a solid). Yet they are close enough together to transfer the charge from particle to particle (unlike in a gas).
There are many particles that contribute to the make up an atom. An electron is the subatomic particle that has a negative charge. The muon and tau particle also are negatively charged.
The electron has a negative charge. It is found in the electron cloud around the nucleus.
Electrons have a negative charge. Anti-Protons can be synthesized in certain cases, and also have a negative charge, although they would not be part of normal matter.
This question is ill-formed. You do not specify which particle you mean, nor what you mean by negative x-direction. Note that coordinate systems in physics are relative; they have no affect on physics, and can thus be chosen in any convient way. I could define your negative x-direction to be the positive x-direction if I wished to do so.