chemistry

Neodymium(II) hydride

Neodymium(II) hydride 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 Neodymium(II) hydride rather than just read about it. In short: Neodymium dihydride is an inorganic compound, with the chemical formula of NdH2, although it is an electride, and it is actually composed of Nd3+(e−)(H−)2. It is ferromagnetic.

Key takeaways

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

Reference excerpt

Neodymium dihydride is an inorganic compound, with the chemical formula of NdH2, although it is an electride, and it is actually composed of Nd3+(e−)(H−)2. It is ferromagnetic.

Chemical properties Neodymium dihydride reacts with lithium borohydride to obtain neodymium tetraboride:

NdH2 + 4 LiBH4 → NdB4 + 4 LiH + 7 H2↑

See also Europium hydride Ytterbium hydride

References

External reading Struss, Arthur W.; Corbett, John D. Reaction of hydrogen with metallic and reduced halides. The requirement of delocalized electrons for reaction. Inorganic Chemistry, 1978. 17(4): 965-9. DOI:10.1021/ic50182a034

Worked examples

Example 1 — a first encounter with Neodymium(II) hydride

Start with the simplest possible case. Write down what Neodymium(II) hydride 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 Neodymium(II) hydride 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 Neodymium(II) hydride 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 Neodymium(II) hydride

In research: Neodymium(II) hydride 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 Neodymium(II) hydride 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: Neodymium(II) hydride is common in secondary-school and first-year university syllabi. It links to neighbouring topics Electrides, Ferromagnetic materials, Metal hydrides, so understanding it makes those chapters shorter.
In everyday life: Look for Neodymium(II) hydride 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 Neodymium(II) hydride in 20 minutes

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

Frequently asked questions

What is Neodymium(II) hydride in simple terms?

Neodymium dihydride is an inorganic compound, with the chemical formula of NdH2, although it is an electride, and it is actually composed of Nd3+(e−)(H−)2. It is ferromagnetic.

Why does Neodymium(II) hydride 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 Neodymium(II) hydride?

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 Neodymium(II) hydride.