adeiledd cofalent / moleciwlaidd syml Flashcards

1
Q

beth yw’r 2 enghraifft o adeiledd cofaletnt?

A

CO2, I2

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2
Q

beth yw priodweddau adeiledd cofalent?

A
  • ymdoddbwynt isel
  • berwbwynt isel
  • dim yn dargludo trydan
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3
Q

pam ydy adeiledd cofalent gyda ymdoddbwynt / berwbwynt isel?

A

bondiau rhwngfoleciwlaidd gwan

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4
Q

pam ydy adeiledd cofalent ddim yn dargludo trydan?

A

nad oes electronnau rhydd

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