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Transition elements
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Transition Elements

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Slide 18

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Which three elements are known as the iron triad?

Question 1

The iron triad consists of iron, cobalt, and nickel. They are called this because of their similar properties.

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Slide 19

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Which group consists of ruthenium, rhodium, palladium, osmium, iridium, and platinum?

Question 2

The answer is the platinum group. These elements all have similar properties, which is why they are grouped together.

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Slide 20

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What is most notable about the nuclei of the actinides?

Question 3

The nuclei of actinides are unstable. All the actinides are radioactive, which means they decay to form other elements.

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