The opposite of a neutron is the antineutron.
If you mean the antiparticle, that's called the antineutron. It has the same electrical charge, since the opposite of zero is zero, but differs in some other properties.
No, protons and neutrons are in the nucleus and the electrons orbit around the nucleus. This all happens inside the atom.
neutron
A sentence for neutron is:A neutron can be described as an uncharged elementary particle
The neutron.
The proton is a positive subatomic particle, but the neutron is not. The neutron has a neutral charge or zero charge.
The opposite of a neutron is the antineutron.
the symbol for a neutron is a negative sign and the opposite of a neutron is a proton which is a positive sign.
A neutron has no charge. That's why it is called a neutron; the neu part stands for neutral, meaning without charge. The charge of an electron, which is -1, is equal and opposite to the charge of a proton, which is +1.
Protons and electrons have opposite charges. Neutrons, as the name implies, are neutral.
They attract because they are of opposite charge.
False, electrons are negatively charged whereas neutrons have no charge. An electron is of opposite charge to a proton which has a positive charge.
Electron capture is the absorption of an electron by an atomic nucleus if that nucleus is neutron poor. An electron is captured, usually from an inner electron shell of that atom, and it will convert a proton in the nucleus into a neutron. We know that a neutron is converted into a proton and an electron in neutron decay, so it might be looked at as something of an opposite nuclear reaction where a proton and an electron combine to form a neutron.
This is called inverse beta decay and it forms a neutron. Normally a neutron will decay into a proton and electron, but the opposite will happen given enough energy. Coincidentally, this is how neutron stars are formed (the immense pressure from gravity overcomes the force separating protons and electrons.)
The beta particle will alter the electromagnetic field of the atom. An electron will add to the electromagnetic charge if emitted, and subtract from, if it is absorbed. A positron will do the opposite. The atomic nucleus will also change. an electron can convert a neutron to a proton if emitted, and a proton to a neutron if absorbed. The positron, again, will do the opposite.
The neutron star so affected wouldn't really notice. The mass of the neutron star is huge compared to that of the material in the accretion disk. And that matter, when it falls in, wouldn't really "slow" the spin of the star much unless there was a gigantic quantity of matter falling in and/or it acted over a very long period.
If the 3He target has its spin polarized along the axis of the neutron beam, you may consider that the protons' spin will be canceling out and the spin will be more-or-less carried by the one neutron. Thus it will prefer to absorb neutrons polarized in the opposite direction, ie negative helicity.
A neutron is still of neutral charge (no charge). Antimatter can be thought of as protons having a negative charge and electrons having a positive charge. If matter and anti-matter collide they annihilate one another, but neutrons remain.