PPT Slide

• Transition elements (B groups), can often form more than  one ion, each with a different charge.

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• Naming compounds of these elements, give metalís ionic  charge in Roman numerals after the metal ionís name.

• For example, iron forms both Fe 2+ and Fe 3+ ions.

The two iron-chlorine compounds are FeCl2 , named iron(II) chloride, and FeCl3 , iron(III) chloride.

• Learn the elements that form multiple ions in Table 2.4.

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