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chemistry

UPt3

UPt3 is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand UPt3 rather than just read about it. In short: UPt3 is an inorganic binary intermetallic crystalline compound of platinum and uranium. Production It can be synthesised as an intermetallic compound, by direct fusion of pure components at 1700 °C according to stoichiometric calculations: 3 Pt + U → UPt3 It can also be synthesised by reduction of uranium dioxide with hydrogen in the presence of platinum at 1700 °C: UO2 + 2 H2 + 3 Pt → UPt3 + 2 H2O Physical properti…

UPt3 — main illustration
UPt3 — illustration

Key takeaways

  • UPt3 belongs to chemistry; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect UPt3 to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of UPt3 from memory before moving on to harder problems.

Reference excerpt

UPt3 is an inorganic binary intermetallic crystalline compound of platinum and uranium.

Production It can be synthesised as an intermetallic compound, by direct fusion of pure components at 1700 °C according to stoichiometric calculations:

3 Pt + U → UPt3 It can also be synthesised by reduction of uranium dioxide with hydrogen in the presence of platinum at 1700 °C:

UO2 + 2 H2 + 3 Pt → UPt3 + 2 H2O

Physical properties UPt3 forms crystals of hexagonal symmetry (some studies hypothesize a trigonal structure instead), space group P63/mmc, cell parameters a = 0.5766 nm and c = 0.4898 nm (c should be understood as distance from planes), with a structure similar to nisnite (Ni3Sn) and MgCd3. The compound congruently melts at 1700 °C. The enthalpy of formation of the compound is -111 kJ/mol. At temperatures below 1 K it becomes superconducting. Due to the large effective mass of the conduction electrons, UPt3 is classed as a Heavy fermion superconductor.

References

Illustrations

UPt3 illustration

Worked examples

Example 1 — a first encounter with UPt3

Start with the simplest possible case. Write down what UPt3 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to UPt3 before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about UPt3 ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of UPt3

In research
UPt3 appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses UPt3 in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
UPt3 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Intermetallics, Platinum compounds, Uranium compounds, so understanding it makes those chapters shorter.
In everyday life
Look for UPt3 outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study UPt3 in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what UPt3 means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain UPt3 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is UPt3 in simple terms?

UPt3 is an inorganic binary intermetallic crystalline compound of platinum and uranium. Production It can be synthesised as an intermetallic compound, by direct fusion of pure components at 1700 °C according to stoichiometric calculations: 3 Pt + U → UPt3 It can also be synthesised by reduction of…

Why does UPt3 matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study UPt3?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on UPt3.

Tags

  • Intermetallics
  • Platinum compounds
  • Uranium compounds

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