The O-H bond in water is polarized due to __.

Low electronegativity difference between oxygen and hydrogen atom.

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Large difference in the electronegativity values of the oxygen and hydrogen atom.

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No difference in the electronegativity values of the oxygen and hydrogen atom.

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Small size of oxygen.

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Solution

The correct option is B
Large difference in the electronegativity values of the oxygen and hydrogen atom.

The O-H bond in a water molecule is polarized due to the large difference in the electronegativity values of the oxygen and hydrogen atoms.The oxygen atom has an electronegativity value of 3.5 while that of the hydrogen atom is 2.1. Oxygen has higher electronegativity so it attained slight negative charge while hydrogen atoms attain slight positive charge.Therefore, a molecule of water due to these charges is a polar molecule.

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Question 83 (i)

In her Science class, Jyoti learned that the atomic weight of Helium is 4.0030; of Hydrogen is 1.0080; and of Oxygen is 16.0000. find the difference between the atomic weights of :
(a) Oxygen and Hydrogen

Which of the following statements are correct?

I) With the help of electronegativity difference between two bonded atoms, polarity of the bond can be explained

II) With increase of energy of electron in an atom, the ionisation potential value of that atom increase

III) For multivalent atoms, electronegativity can be explained with the help of Mulliken scale

IV) Highest electronegative element is fluorine

Q. Correct order of electronegativity difference between bonded atoms is:

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