The element with positive electron gain enthalpy is

Important Questions on Classification of Elements and Periodicity in Properties

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 78

Which of the following species has the highest electron affinity?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 79

The highest electron affinity is shown by

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 80

Electronegativity of the following elements increases in the order

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 81

The correct order of electronegativities of $\mathrm{N}, \mathrm{O}, \mathrm{F} \mathrm{and} \mathrm{P}$ is

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 82

Which of the following represents the most electropositive element ?

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 83

Electronic configuration of most electronegative element is

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 84

Among ${\mathrm{Me}}_3\mathrm{N}, {\mathrm{C}}_5{\mathrm{H}}_5\mathrm{N} \mathrm{and} \mathrm{MeCN}$ ($\mathrm{Me}$ = methyl group), the electronegativity of $\mathrm{N}$ is in the order

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 85

Among the elements $\mathrm{B}, \mathrm{Mg}, \mathrm{Al} \mathrm{and} \mathrm{K}$, the correct order of increasing metallic character is