Inner Transition Elements Flashcards

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Questions and Answers

What is an inner transition element?

  • Non-metals
  • Two rows at the bottom of the periodic table (correct)
  • Elements in group 1
  • Elements in group 3-4

Why are they called inner transition elements?

They fit within the transition elements on the table.

Why are inner transition elements located at the bottom of the periodic table?

To save room in the periodic table.

What is a lanthanide?

<p>The first row of inner transition elements following lanthanum.</p> Signup and view all the answers

What is an actinide?

<p>The second row of inner transition elements following actinium.</p> Signup and view all the answers

Most lanthanides are used for?

<p>Movie lighting.</p> Signup and view all the answers

All the actinides are radioactive and unstable.

<p>True (A)</p> Signup and view all the answers

What are valence electrons?

<p>Electrons in the outermost energy level of an atom.</p> Signup and view all the answers

Which groups occupy the s sublevel?

<p>Group 1 and 2.</p> Signup and view all the answers

Which groups occupy the p sublevel?

<p>Group 13 and 18.</p> Signup and view all the answers

Which groups occupy the d sublevel?

<p>Group 3 and 12.</p> Signup and view all the answers

Which groups occupy the f sublevel?

<p>Lanthanides and actinides.</p> Signup and view all the answers

What are examples of transition metals?

<p>Copper, silver, gold, and iron.</p> Signup and view all the answers

In atoms of a transition metal, the highest occupied ______ contain electrons.

<p>s sublevel and a nearby d sublevel</p> Signup and view all the answers

In atoms of inner transition elements, the highest occupied ______ generally contain electrons.

<p>s sublevel and a nearby f sublevel</p> Signup and view all the answers

What is an example of an inner transition metal?

<p>Uranium.</p> Signup and view all the answers

What are the elements with atomic numbers from 57 to 71 called?

<p>Lanthanides.</p> Signup and view all the answers

What are scandium and yttrium often called?

<p>Rare earth elements.</p> Signup and view all the answers

What are rare earth elements?

<p>All silvery-white metals which are often found in the same ores.</p> Signup and view all the answers

Why are they called lanthanides?

<p>They exhibit similar chemical properties to lanthanum.</p> Signup and view all the answers

Where are lanthanides used?

<p>In products such as hybrid cars, superconductors, and permanent magnets.</p> Signup and view all the answers

What are the 15 elements with atomic numbers from 89 to 103 called?

<p>Actinides.</p> Signup and view all the answers

The actinides are named after which element?

<p>Actinium.</p> Signup and view all the answers

What group includes mostly man-made elements?

<p>Actinides.</p> Signup and view all the answers

What are the few exceptions in actinides found in nature?

<p>Uranium and thorium.</p> Signup and view all the answers

Match the following uses with the elements:

<p>Uranium = Nuclear reactors Plutonium = Nuclear bombs Americium = Smoke detectors</p> Signup and view all the answers

Which elements have 1 valence electron?

<p>Group 1.</p> Signup and view all the answers

Which elements have 2 valence electrons?

<p>Group 2.</p> Signup and view all the answers

Which elements have 3 valence electrons?

<p>Group 13.</p> Signup and view all the answers

Which elements have 4 valence electrons?

<p>Group 14.</p> Signup and view all the answers

Which elements have 5 valence electrons?

<p>Group 15.</p> Signup and view all the answers

Which elements have 6 valence electrons?

<p>Group 16.</p> Signup and view all the answers

Which elements have 7 valence electrons?

<p>Group 17.</p> Signup and view all the answers

Which elements have 8 valence electrons?

<p>Group 18.</p> Signup and view all the answers

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Study Notes

Inner Transition Elements

  • Located in the two rows at the bottom of the periodic table, between groups 3-4, and in periods 6-7.
  • Known as "inner transition elements" because they fit within the transition elements in the periodic table.

Lanthanides and Actinides

  • Lanthanides: First row of inner transition elements, following lanthanum, encompassing atomic numbers 57 to 71.
  • Actinides: Second row of inner transition elements, following actinium, consisting of 15 elements with atomic numbers 89 to 103.

Properties and Uses

  • Most lanthanides are used for applications like movie lighting and in modern technologies.
  • All actinides are radioactive and exhibit instability.
  • Actinides, including uranium and thorium, have few natural occurrences; mostly, they are produced synthetically.

Valence Electrons and Sublevels

  • Valence electrons are the outermost electrons of an atom, important for chemical bonding.
  • The s sublevel is occupied by Groups 1 and 2; Group 13 and 18 elements occupy the p sublevel; Groups 3 and 12 use the d sublevel; the f sublevel is where lanthanides and actinides reside.

Transition Metals

  • Examples include copper, silver, gold, and iron, which have unique properties due to their electron configurations.

Rare Earth Elements

  • Scandium and Yttrium are categorized as rare earth elements, often found in the same ores.
  • Rare earth elements are silvery-white metals critical in various high-tech applications.

Applications of Inner Transition Elements

  • Lanthanides are used in hybrid cars, superconductors, and permanent magnets.
  • Actinides have applications in nuclear reactors and bombs, with uranium and plutonium being key materials.

Specific Element Applications

  • Americium, an actinide, is commonly used in smoke detectors.

Valence Electron Distribution

  • Group 1 elements have 1 valence electron, Group 2 elements have 2, continuing up to Group 18, which has 8 valence electrons.

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