Question

needle repulsive in coin to apply chemical.chemical name ?
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Answer 1

Answer:

The name of a chemical compound that shows the names of each of its elements or subcompounds. For example, the chemical name of aspirin is acetylsalicylic acid. Compare trivial name.

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Answer 2

Answer:

Any metal or chemical or any thing which repels Iron

Explanation:

1

You want diamagnetism: this is when a material is repelled by a magnetic field just as normal ferromagnetic materials are attracted to it. The two main problems are that diamagnetism is typically very weak compared to ferromagnetism (with the exception of superconductors), and that it sounds like you want the iron and steel to become repelled. But iron and steel are ferromagnetic by nature (with the exception of some alloys like stainless steel): they will always be attracted to magnets as long as they have electrons with unpaired spins that can do exchange interactions.