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Which of the following elements has properties different than the rest? Ac Co Cu Sc

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Ac, which is Actinium, appears in the “lanthanoids (4f) and actinoid (5f)” part of the periodic table. the rest of the elements appear in the normal, top part.
User Jon Nylander
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Answer: Option (a) is the correct answer.

Step-by-step explanation:

The elements cobalt (Co), copper (Cu), and Scandium (Sc) are all d-block elements and are also known as transition elements. Thus, all these show similar properties as all of them are transition elements.

Whereas Actinium (Ac) is a lanthanide series or f-block element. It shows different properties as compared to transition elements.

Thus, we can conclude that out of the given options, Ac has properties different than the rest.


User Scazzy
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