Question

how to determine the charge of an ion..??​

Answer 1

Explanation:

To find the ionic charge of an element you'll need to consult your Periodic Table. On the Periodic Table metals (found on the left of the table) will be positive. Non-metals (found on the right) will be negative.

hen you are working with ionic compounds (they are called ionic because they consist of ions) you'll often need to determine the ionic charge. This is especially the case when you are writing formulas based on the chemical name.

To find the ionic charge of an element you'll need to consult your Periodic Table. On the Periodic Table metals (found on the left of the table) will be positive. Non-metals (found on the right) will be negative. But you need to know the specific ionic charge elments.

The image below shows the general trend for ionic charge. This is often taught in high school chemistry.

Ionic Charges on Periodic Table (General Trend)

For a more specific description see the image below which highlights a few exceptions. Note that the elements that are in blue/purple have charges that vary or where ionic charge is not appropriate.

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Answer 2

To determine the charge on an ion, firstly the nature of the atom is identified that whether it loses or gains the electron which can be done with the help of a periodic table.

• When any atom gain or loses an electron then electrically charged particles are formed which are termed as ions.
• The gain or loss of an electron is generally done from the outermost shell of the atom and thus leaving the complete outer shell in such a way that the electronic structure of the ion or the configuration of the atom is equal to the configuration of a noble gas.
• To determine the charge on an ion, firstly the nature of the atom is identified that whether it loses or gains the electron which can be done with the help of a periodic table.
• In the case of the elements that belongs to group 1, 2, 13 and 14, the charge that is formed by the element on an ion is always positive because it loses an electron to get stabilized or to get a complete valence shell.
• In the case of the elements that belong to groups 15, 16 and 17, the charge that is formed by the element on an ion is always negative because it gains an electron to get stabilized or to get a complete valence shell.
• For the elements of group 18, there is no charge on the ions because they are already stabilized and hence, they do not lose or gain electrons. They are considered as noble gas.

Hence, the nature of an atom is identified using a periodic table to determine the charge on an ion.