Question

What do you mean by ions explain with example​

Answer 1

Answer:

(in chemistry) an atom or a molecule that has gained or lost one or more of its parts (electrons) and so has a positive or negative electric charge

Explanation:

Examples of Positive Ions

Positive ions are typically metals or act like metals. Many common materials contain these ions. Mercury is found in thermometers, for instance, and aluminum is a metal that is found in a surprising amount of things. It's even an ingredient in baking soda and in certain other food products!

The positive charge (more protons versus electrons) for a cation is shown by a number and plus sign after the formula. If there's just a plus sign, it means the charge is plus 1. Some examples of cations, or positive ions, include the following:

Aluminum - Al 3+

Barium - Ba 2+

Bismuth - Bi 3+

Cadmium - Cd 2+

Calcium - Ca 2+

Cesium - Cs +

Chromium (III) - Cr 3+

Cobalt - Co 2+

Copper (I) - Cu +

Copper (II) - Cu 2+

Hydrogen - H +

Iron (II) - Fe 2+

Iron (III) - Fe 3+

Lead (II) - Pb 2+

Lithium - Li +

Magnesium - Mg 2+

Mercury (I) - Hg2 2+

Mercury (II) - Hg 2+

Nickel - Ni 2+

Potassium - K +

Rubidium - Rb +

Silver - Ag +

Sodium - Na +

Strontium - Sr 2+

Tin (II) - Sn 2+

Zinc - Zn 2+

Examples of Negative Ions

Just as atoms can lose electrons to become cations, some can gain electrons and become negatively charged anions. Again, you may be familiar with some of these ions. Fluoride is sometimes added to community water supplies. Your dentist may also give you a flouride treatment.

The negative charge (fewer protons than electrons) for an anion is shown by a number and minus sign after the formula. If there's just a minus sign, it means the charge is minus 1. Here are several examples of anions:

Bromide - Br -

Chloride - Cl -

Fluoride - F -

Iodide - I -

Nitride - N 3-

Oxide - O 2-

Sulfide - S 2-

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Answer 2

Answer:

• An ion is an atom or a group of atoms in which the number of electrons is different from the number of protons.

• If the number of electrons is less than the number of protons the practical is a positive ion, also called a cation. Ex : sodium ion Na+ , chloride ion cl- , and oxide ion O2

• If the number of electrons is more than the number of protons the practical is a negative ion, also called a anion . Ex : Bromide - Br - ,Chloride Cl - ,Fluoride - F , and all halogens too

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