What are f block elements?

Answer 1

#f-"block elements"# are the 28 lanthanide and actinide metals, in which the #f# shell is progressively filled.

Sometimes, the Group III metals are included with the #f# block elements. They tend to form #III^+# ions and are marked by their large size, and Lewis acidity.

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Answer 2

Cameron Andrews

F-block elements, also known as inner transition metals, are elements found in the two bottom rows of the periodic table. They include the lanthanides and actinides series. These elements have partially filled f orbitals in their electron configurations and exhibit similar chemical properties within each series. They are typically characterized by their high atomic numbers, tendency to form colored compounds, and strong paramagnetism.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.