Class 7 CDF

As the atomic size increases the nuclear attraction ____electronegativity ____

• Increases,increases

• Decreases, Decreases

• Increases,Decreases

• Decreases, Increases

An atom with ---- oxidation state is more electronegative as it has more effective nuclear charge

• Higher

• Lower

• Medium

• None

An atom with higher oxidation state is --- electronegative as it has ____effective nuclear charge

• Less,less

• More,More

• Less,More

• More , less

Electronegativity of

• Fe+2>Fe+3

• Fe+3>Fe+2

• Fe+2=Fe+3

• None

On moving from left to right electronegativity value

• Increases

• Decreases

• Remains same

• None

On moving from left to right electronegativity increases because atomic size ____ nuclear charge ----

• Increases, Increases

• Decreases, Decreases

• Increases,Decreases

• Decreases, Increases

Electronegativity difference less than 1.7

• Covalent bond

• Ionic bond

• 50% covalent and 50% ionic

• Both 1 and 2

Electronegativity difference greater than 1.7

• Covalent bond

• Ionic bond

• 50% covalent and 50% ionic

• Both 1 and 2

Electronegativity difference exactly equal to 1.7

• Covalent bond

• Ionic bond

• 50% covalent and 50% ionic

• Both 1 and 2

The tendency of an atom of an element to lose one or mote electrons and form a positive ion is known as

• Electropositivity

• Electronegativity

• Ionisation energy

• Electron density