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What allows the formation of a positive ion?

Answer 1

Peyton Adams

Loss of Electron (s).

If an atom loses one or more electrons , it becomes positive ion.

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Answer 2

Noah Aldrich

See the explanation.

A positive ion is formed when an atom of a metal loses one or more electrons. This gives the metal ion a filled valence shell.

For example, a neutral sodium atom contains electrons in three main energy levels, n=1, n=2, n=3. It has one electron in its valence shell, which makes it unstable. When it loses the single electron in its valence shell to another atom, its second energy level has a full valence shell, which makes it stable, and the atom is now a sodium ion with a charge of #1^+#.

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Answer 3

Ellie Andrews

An atom can form a positive ion, also known as a cation, through a variety of processes, including chemical reactions, ionization, or the interaction of atoms with electromagnetic radiation. When an atom loses one or more electrons, it leaves the atom with a net positive charge because the number of protons in the nucleus exceeds the number of electrons in the atom's electron cloud.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.