When an atom loses or gains electrons, it becomes an ion.
If you mean a neutral atom (having no charge), the numbers of protons and neutrons can only change in a nuclear reaction. During a chemical reaction, the number of electrons can increase, resulting in a negatively charged ion, called an anion; or the number of electrons can decrease, resulting in a positively charged ion, called a cation. Whether an atom gains or loses electrons depends on which element it is.
a charged particle if the atom is neutral before the change
Number of electrons are lost by an atom in a chemichl reaction
The number of protons is less than the number of electrons in an atom.
An atom with no electric charge will be called a neutral atom. In a neutral atom, there is a balance of charges, and the number of protons will be equal to the number of electrons. It's really that simple. Compare this to atoms that have an imbalance of charges. These atoms are called ions.
If you mean a neutral atom (having no charge), the numbers of protons and neutrons can only change in a nuclear reaction. During a chemical reaction, the number of electrons can increase, resulting in a negatively charged ion, called an anion; or the number of electrons can decrease, resulting in a positively charged ion, called a cation. Whether an atom gains or loses electrons depends on which element it is.
Electron/s are removed from the atom.
he number of protons stays the same. :)
The number of electrons should equal the number of protons, otherwise you have an ion.
a charged particle if the atom is neutral before the change
On average, in any atom, you will have the same number of electrons and protons.
Number of electrons are lost by an atom in a chemichl reaction
No. The atomic number of an element is the number of protons in the nucleus of the atoms of that element, and that number never changes in any ordinary chemical reactions. Changes in the number of protons can only occur through radioactive decay or other nuclear reactions. An atom develops a charge by gaining or losing electrons, at which point they are called ions. An atom that gains electrons becomes a negatively charged ion, and an atom that loses electrons becomes a positively charged ion.
There is none, but a neutral atom is called a neutron. There is no neutral element.
An ion. If there are less electrons than protons, the atom gains a positive charge and is called a cation. If there are more electrons than protons, the atom gains a negative charge and is called an anion.
the atomic number (this is also the number of protons)
the no. of protons or the no.of electrons inthe nucleus ofan atom is called the atomic number of that atom.