BIOCHEMISTRY
POLAR AND NONPOLAR MOLECULES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Fluorine has less energy levels.
|
|
|
Chlorine has more electrons in its outer shell
|
|
|
Fluorine has more protons.
|
|
|
None of these
|
Detailed explanation-1: -Answer and Explanation: Fluorine is more electronegative than chlorine because fluorine is smaller and has its electrons closer to the positively charged nucleus. Electronegativity increases as you go up a group on the periodic table. This is because the atomic radius decreases.
Detailed explanation-2: -Accordingly the order of electronegativity of the given elements would be: Fluorine > Chlorine > Bromine > Iodine. ( Fluorine has the highest electronegativity.)
Detailed explanation-3: -2nd .:-Fluorineis the most electronegative element because it has 5 electrons in it’s 2P shell. The optimal electron configuration of the 2P orbital contains 6 electrons, so since Fluorine is so close to ideal electron configuration, the electrons are held very tightly to the nucleus.
Detailed explanation-4: -the electron affinity of the fluorine is less than chlorine because the size of fluorine is too small as size decreases from left to right inside period, whereas chlorine has a larger size to accommodate electrons hence electron affinity of chlorine is more than fluorine.
Detailed explanation-5: -Why isn’t chlorine as electronegative as fluorine? Chlorine is a bigger atom than fluorine. In the chlorine case, the bonding pair will be shielded by all the 1-level and 2-level electrons. The 17 protons on the nucleus will be shielded by a total of 10 electrons, giving a net pull from the chlorine of about 7+.