An ion, or a positive ion.
The core at the center of an atom is called the nucleus. It contains protons, which have positive charge, and neutrons, which contribute to the mass of the atom.
Protons are particles with a positive electric charge. As of now, science has concluded that there is no proton opposite (or, as we call them, 'antimatter particle') residing in the nucleus. However, some theoretical physicists theorize that the antimatter particle for a proton could be a subatomic particle called a 'negatron'. A neutron, incidentally, is neutral, and has no overall charge, and is not the opposite of a proton, contrary to assumed mass belief.
A negative ion, aka an anion, has a negative charge because it acquired electrons from another now-ion that is positive. An atom because an ion to fill its valence electron shell to the most it can (eight).
An atom has three charges: protons which are +, electrons which are - and neutrons which have neither. They balance each other out. If electrons are lost, the atom now has more protons and the atom becomes positive.
A neutrally charged atom is just called an atom. This is when the atom's number of electrons is equal to its number of protons, canceling out all far-field electromagnetic effects. If the atom has a net charge, it is then called an ion.
The core at the center of an atom is called the nucleus. It contains protons, which have positive charge, and neutrons, which contribute to the mass of the atom.
An atom with an electrical charge is called an ion.
An object that has equal numbers of positive and negative charges is called electrically neutral. This means that the overall charge of the object is zero, as the positive and negative charges cancel each other out. Examples include a neutral atom or a neutral molecule.
If it has a positive charge it is a Cation. If it has a negative charge it is an Anion.
Thomson believed about atoms, that : An atom consists of a sphere of positive charge with negatively charged electrons embedded in it. Positive and negative charges in an atom are equal in magnitude, thus an atom is electrically neutral and it has no overall + or - charge.
The individual particles may be charged. Each electron has a charge of -1, and each proton +1.But if the atom has the same number of electrons as protons, then there is no overall charge on the atom.It is a bit like having a bank account. Over a month, say, you may put in $200 (call it a positive of 200) and take out $200 (negative 200). But over the whole month the balance is zero.
A ion
Electrons have a negative charge, so they are usually written as "e-". When an atom loses an electron, the net charge on the atom increases.Suppose a hydrogen atom is hanging out (note that hydrogen is diatomic, but ignore that part for now) and somehow loses its electron. The electron will get taken up by something else with a positive charge (opposite charges attract each other). In general it would look something like the following:H -> H+ + e-This positively charged hydrogen (H+ on the products side) is considered a Cation (cation's are positive as they have a T in them that looks like a +, anions don't have a T so they are what we call negatively charged anions).
an alpha particle
The net charge of an atom is always zero, because if an atom gains or loses electrons, causing it to acquire a net charge, we then call it an ion, rather than an atom.
Protons are particles with a positive electric charge. As of now, science has concluded that there is no proton opposite (or, as we call them, 'antimatter particle') residing in the nucleus. However, some theoretical physicists theorize that the antimatter particle for a proton could be a subatomic particle called a 'negatron'. A neutron, incidentally, is neutral, and has no overall charge, and is not the opposite of a proton, contrary to assumed mass belief.
This is a cation (positive ion).