Dielectric classification – definition of elemental dielectrics Elemental dielectrics are dielectrics composed of only one kind of atom (for example, noble gases like helium, neon, argon). Is this statement correct?

Electronics and Communication Engineering Materials and Components Difficulty: Easy
Choose an option
  • A
    True
  • B
    False
  • C
    True only at cryogenic temperatures
  • D
    False; elemental dielectrics must be diatomic
  • E
    True only for metals

Answer

Correct Answer: True

Explanation

Introduction:Dielectrics can be categorized by composition: elemental (single-atom species), molecular (multi-atom molecules), and compound/ceramic solids. This classification helps anticipate polarization mechanisms (electronic, ionic, orientation) and dielectric strength.

Given Data / Assumptions:

  • Elemental substance contains one atomic species.
  • Examples include noble gases (He, Ne, Ar) and solid elemental insulators such as sulfur in certain phases.
  • Focus is on compositional definition, not on phase-dependent properties.

Concept / Approach:

An “elemental dielectric” is indeed a dielectric material made from atoms of a single element. In gases like helium or neon, polarization is entirely electronic; in solids composed of a single element, electronic and lattice contributions may appear, but compositionally they remain elemental. The statement as a definition is therefore correct.

Step-by-Step Solution:

Define elemental: composed of one atomic species.Identify dielectric examples: He, Ne, Ar gases exhibit electronic polarization only.Conclude the given definition is accurate.

Verification / Alternative check:

Textbook classifications separate elemental dielectrics from molecular ones like N2, CO2, H2O, and from ionic solids like NaCl or ceramics (Al2O3), confirming the definition.

Why Other Options Are Wrong:

Diatomic or metallic requirements are irrelevant; temperature qualifiers do not alter the compositional definition.

Common Pitfalls:

Confusing “elemental” with “monatomic gas only”; solids composed of a single element may also be dielectrics depending on structure.

Final Answer:

True

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