Problem: Indicate whether each statement is true or false:(a) Substitutional alloys tend to be more ductile than interstitial alloys.(b) Interstitial alloys tend to form between elements with similar ionic radii.(c) Nonmetallic elements are never found in alloys.

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We are being asked to indicate whether each statement is true or false.


Recall the definitions

  • substitutional alloy – atoms of metallic crystals are substituted with other atoms of the same size
  • interstitial alloy – smaller atoms are inserted/trapped into the holes of the metal lattice


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Problem Details

Indicate whether each statement is true or false:
(a) Substitutional alloys tend to be more ductile than interstitial alloys.
(b) Interstitial alloys tend to form between elements with similar ionic radii.
(c) Nonmetallic elements are never found in alloys.

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