Question

ionic character of bond becomes dominant over covalent character when
a)if electronegativity difference is greater than 1.7
b)if electronegativity difference is less than 1.7
c)if electronegativity difference is equal to 1.7
d)if electronegativity difference is equat to zero​

Answer 1

Answer:

a) if electronegativity difference is greater than 1.7

Explanation:

when compound is under the influence of an ionic bond it gains partial charge.in an ionic bond a more electro-ve atom pulls another less electro-ve /an electro+ve atom towards itself to complete its octate.

in a covalent bond sharing of electrons takes place due to no difference / very negligible difference in the electronegativity of the atoms.

hence,

ionic charachter of a bond dominates the covalent bond if the electronegativity difference is greater than 1.7

REMEMBER:

1.7 is the minimum value of the electronegativity difference required between two atoms to indulge in an ionic bond which is calculated/assumed by the former scientists.

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Answer 2

Answer:

a) if electronegativity difference is greater than 1.7

Explanation:

• A compound acquires a partial charge when it is subject to an ionic bond. In an ionic bond, a more electronegative atom attracts a less electronegative atom or an electropositive atom to complete its octate.

• Because there is no difference or a very little variation in the electronegativity of the atoms, sharing of electrons occurs in covalent bonds.

• The former scientists computed or inferred that an ionic bond between two atoms must have a minimum electronegativity difference of 1.7.

• As a result, the term "ionic bonding" is used when the ionic character is greater than the covalent character, i.e., when there is a significant difference in the electronegativity between the two atoms and this causes the bond to be more polar (ionic) than in a covalent bond where the electrons are shared more evenly.

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