Question

Which of the following statements about electronegativity are true? (Select all that apply.)

-Electronegativity is the measure of the energy released when an atom receives an electron.
-Electronegativity is the measure of the repulsive force between two electrons in the same orbital.
-Electronegativity is the measure of the energy required to remove an electron from an atom.
-Electronegativity is a number that reflects how tightly electrons in a covalent bond are drawn toward an atom.
-The difference in electronegativities between two atoms helps predict whether the bond between them is polar or nonpolar.
-Electronegativity tends to decrease on the Periodic Table as you move up and to the right.

Answer 1

Answer:

1.

Electron gain enthalpy is measures the energy released when an atom receives an electron.

So , first one is incorrect as given  Electronegativity is the measure of the energy released when an atom receives an electron

2.

Electronegativity is a property of a boned atom and it is relative attracting power of an atom.

So, second one also incorrect as it mentioned repulsive force between two electrons in the same orbital.

3.

Ionization enthalpy is measure of the energy required to remove an electron from an atom.

So, third one also incorrect as given Electronegativity is the measure of the energy required to remove an electron from an atom

4.

Electronegativity is a number that reflects how tightly electrons in a covalent bond are drawn toward an atom.

It is correct as electronegativity occurs in covalent bond either atom is polar or non polar.

5.

Electronegativity is property which predict bond would polar or non polar.

So, fifth one is correct as given electronegativities between two atoms helps predict whether the bond between them is polar or nonpolar.

6.

Electronegativity decreases from top to bottom as atom size increases and bonding electron become away from nucleus. Also on moving left to right Electronegativity increase but here given it's decreases to right side which is incorrect .

So , this is incorrect because left to right Electronegativity increases and top to buttom Electronegativity decreases.

Answer 2

it is a special type of covalent bond between two atoms by which the atom which is more electronegative attracts more electrons from the bonded pair than the other atom.