An ion is an atom with a net electric charge. An ion is formed when an atom either gains or loses a valence electron. Atoms with an unfilled outer shell tend to gain or lose electrons so they can achieve a filled outer shell. Atoms that gain an electron are negative ions, and atoms that lose an electron are positive ions.
An ions is formed when an atom gains or loses electrons.
A negative ion (anion) is formed after gain of electrons in the atom.A positive ion (cation) is formed after loss of electrons from the atom.
Atoms are neutral species containing protons and neutrons in the nucleus and electrons in the orbitals (or shells). Ions are formed when an atom gains or loses electrons. If an atom gains electrons, then negatively charged ions called anions are formed. If an atom loses electrons, then positively charged ions called cations are formed.
Metal ions do not share electrons with one another. Metal ions have a positive charge.
An ion is an atom which has more or less electrons than protons. If it has more electrons it's a negative ion, and if it has less electrons it's a positive ion. An atom loses or gets electrons in reactions with other elements.
Ions are formed when an atom gains or loses electrons. When an atom loses electrons the Ion that is formed has a positive charge.
An ions is formed when an atom gains or loses electrons.
An ions is formed when an atom gains or loses electrons.
An ions is formed when an atom gains or loses electrons.
A negative ion (anion) is formed after gain of electrons in the atom.A positive ion (cation) is formed after loss of electrons from the atom.
cations are positively charged ions formed by loss of electrons from the neutral atoms having 1,2,3 valence electrons
anions. Cations are the positive ion formed by shedding an electron.
In every element the number of protons in an atom is equal to the number of electrons in it. But in the ions there is loss or gain of electrons. But the ions and the atoms are not same . Ions are formed from atoms. In the case of radio active disintegration the number of protons changes . Even after the radio active decay they exist in ionic form. So far as the question is concerned we cannot say that an atom exists in which the number of protons is different from that of electrons.
Negative charge: electrons Positive charge: protons
When there are ions there are charges. When you form a covalent bond you do not lose or gain electrons, you just share them therefore there would be no ion (charge).
An ionic bond is formed between two metal ions, one metal ion and a polyatomic ion, or two polyatomic ions, and the electrons are completely shared. An example is MgSO4 (magnesium sulfate). Magnesium is a 2+ metal and sulfate is a 2- polyatomic ion.
Negative ions have an excess of electrons while positive ions have a deficiency of electrons.