Chemistry, 14.11.2019 06:31 RealGibbon857

(quick) based on difference in electronegativities between atoms, which is the most polar bond pair? h — s h — cl h — o h — f

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Answer from: jiggyN

First, you need to have a periodic table that contains the electronegativities values. once you have them, you just need to subtract the values of the atoms and each bond. I have attached a table with these values. also, it does not matter then order in which you subtract them because they are always positive values. even though you get negative values in your calculator, just make it positive.

H-S----> 2.1 - 2.5= 0.4
H-Cl---> 2.1 -3.0=0.9
H-O---> 2.1- 3.5= 1.4
H-F----> 2.1 - 4.0= 1.9

HF is the most polar because it has the highest electronegativity difference.

(quick) based on difference in electronegativities between atoms, which is the most polar bond pair?

(quick) based on difference in electronegativities between atoms, which is the most polar bond pair?

Answer from: Dreamer05

Option (d) is the correct answer.

Explanation:

It is known that more is the electronegativity difference between the combining atoms, more polar is the bond formed by them.

Therefore, electronegativity difference for the given species is as follows.

Electronegativity of H = 2.2

Electronegativity of S = 2.58

Electronegativity of Cl = 3.16

Electronegativity of O = 3.44

Electronegativity of F = 3.98

Hence, electronegativity of H-S = 2.58 - 2.2 = 0.38

Electronegativity of H-Cl = 3.16 - 2.2 = 0.96

Electronegativity of H-O = 3.44 - 2.2 = 1.24

Electronegativity of H-F = 3.98 - 2.2 = 1.78

Thus, electronegativity difference is maximum for H-F.

Therefore, we can conclude that H-F is the most polar bond pair.

Answer from: Quest

chemical energy is stored in the chemical bonds of atoms and molecules. it can only be seen when it is released in a chemical reaction. when chemical energy is released, the substance from which the energy came is often changed into an entirely different substance.

this chemical reaction releases energy in the form of light and heat. chemical energy is the potential energy stored in the arrangement of atoms within molecules. breaking chemical bonds requires energy, while forming new chemical bonds releases energy.

the atp molecule can store energy in the form of a high energy phosphate bond joining the terminal phosphate group to the rest of the molecule. in this form,energy can be stored at one location, then moved from one part of the cell to another, where it can be released to drive other biochemical reactions.

Answer from: Quest

the answer is d. 74.02

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