AP BIOLOGY

BIOCHEMISTRY

POLAR AND NONPOLAR MOLECULES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What elements have zero electronegativity?
A
metals
B
nonmetals
C
metalloids
D
noble gases
Explanation: 

Detailed explanation-1: -Noble gases have complete outermost shell so they don’t attract the electrons and their electronegativities are almost zero.

Detailed explanation-2: -Since electronegativity measures the amount of attraction between an atom and an electron, noble gases do not have electronegativity. Was this answer helpful?

Detailed explanation-3: -Noble gases are stable and have already reached full octet (full valence shell). Therefore, Neon gas, being a noble gas, is not included in electronegativity (or electron affinity and atomic radius for that matter).

Detailed explanation-4: -The noble gases are all considered to have zero electronegativity.

Detailed explanation-5: -The statement is true. Valency of Noble gases is zero because they have fully filled outermost shells. So they have no tendency to gain or lose electrons.

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