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- If the electronegativity difference is 1.7 the bond is:<s
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If the electronegativity difference is 1.7 the bond is:
60% ionic
40% covalent
50% covalent and 50% ionic
None
Answers (1)
As we have learnt,
Scale for measuring electronegativity and application of EN -
Nature of Bond: From the electronegativity values of respective atoms, the nature of bond can be estimated.
(i) When the electronegativity difference between two atoms i.e, MA- MB = 0, then the bond is purely covalent.
(ii) When MA- MB is small, then the bond is polar but covalent.
(iii) When MA- MB is 1.9, then the bond is 50% ionic and 50% covalent.
(iv) When MA- MB is more than 1.9, the bond is very much ionic and less covalent.
The percentage of ionic character is given by the following formula:
Percentage of ionic character = 16(MA - MB) + 3.5(MA - MB)2
Where MA and MB are the electronegativities of two bonded atoms i.e, A and B.
The electronegativity difference between two atoms gives an idea about the nature of the bond between them.
If the electronegativity difference is 1.7, the bond is 50% ionic and 50% covalent. With the increased difference, the ionic character increases.
Hence, option number (3) is correct
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