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How Can We Predict the Charge of Ions from the Periodic Table?

To figure out the charge of ions using the periodic table, we start by checking the group number.

  1. Cations (these are positively charged ions):

    • Metals, which are usually found in Groups 1 to 3, lose electrons.
    • For example, sodium (Na) is in Group 1. It loses one electron and becomes Na+^+.

  2. Anions (these are negatively charged ions):

    • Non-metals, found in Groups 15 to 17, gain electrons.
    • For instance, chlorine (Cl) is in Group 17. It gains one electron to become Cl−^-.

Just remember, elements that are in the same group usually have similar ionic charges!

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How Can We Predict the Charge of Ions from the Periodic Table?

To figure out the charge of ions using the periodic table, we start by checking the group number.

  1. Cations (these are positively charged ions):

    • Metals, which are usually found in Groups 1 to 3, lose electrons.
    • For example, sodium (Na) is in Group 1. It loses one electron and becomes Na+^+.

  2. Anions (these are negatively charged ions):

    • Non-metals, found in Groups 15 to 17, gain electrons.
    • For instance, chlorine (Cl) is in Group 17. It gains one electron to become Cl−^-.

Just remember, elements that are in the same group usually have similar ionic charges!

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