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What is an ion?
An ion is a charged particle that can be a single atom or a group of atoms, formed when electrons are gained or lost.
How do metals form ions?
Metals lose electrons from their outer shell to form positive ions (cations).
How do non-metals form ions?
Non-metals gain electrons in their outer shell to form negative ions (anions).
What charge does an ion have if it loses 2 electrons?
If an atom loses 2 electrons, it forms a 2+ ion.
What groups of the periodic table are most likely to form ions?
Groups 1, 2, 6, and 7 are the most likely to form ions.
What kind of ions do Group 1 and Group 2 elements form?
Group 1 elements form +1 ions, and Group 2 elements form +2 ions.
What kind of ions do Group 6 and Group 7 elements form?
Group 6 elements form 2- ions, and Group 7 elements form 1- ions.
How does sodium (Na) form an ion?
Sodium (Na) loses 1 electron to form a Na⁺ ion with the same electron configuration as neon.
How does chlorine (Cl) form an ion?
Chlorine (Cl) gains 1 electron to form a Cl⁻ ion with the same electron configuration as argon.
What is the relationship between electron configuration and ion formation?
Atoms form ions to achieve a full outer shell, like the electron configuration of a noble gas.
