Which of the following compounds have no dipole-dipole attraction? A. C6H6
B. C2H5OH
C. CH3CH2CH2CH2OH
D. CH3-O-CH3

In molecules like BCl3 and CCl4, that have only one type of bond and a molecular geometries that are highly symmetrical (trigonal planar and tetrahedral), the individual bond dipole moments completely cancel, and there is no net dipole moment

Explanation:

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They carry out the exchange of gases as we breathe ( oxygen and carbon dioxide).

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.