AP BIOLOGY

BIOCHEMISTRY

POLAR AND NONPOLAR MOLECULES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The most electronegative atom in the periodic table is:
A
Fluorine
B
Helium
C
Neon
D
Francium
Explanation: 

Detailed explanation-1: -Fluorine is the most electronegative element. Fluorine has an electronegativity of 3.98 on the Pauling Electronegativity Scale and a valence of 1. A fluorine atom needs one electron to fill its outer electron shell and achieve stability, which is why free fluorine exists as the F− ion.

Detailed explanation-2: -F is the most electronegative element on the periodic table. Followed by O, then N and Cl. In general the electronegativity of an element increases as one goes up a family.

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