How many elements are more electropositive than $\mathrm{Cl}.$

$\mathrm{B}, \mathrm{N}, \mathrm{O}, \mathrm{C}, \mathrm{S}, \mathrm{P}, \mathrm{H}, \mathrm{Li}$

Important Questions on Classification of Elements and Periodicity in Properties

EASY

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 13 - Classification of Elements and Periodicity in Properties>Exercise-4>Q 56

The lithium-ion $\left({\mathrm{Li}}^{+}\right)$ and hydride ions $\left({\mathrm{H}}^{-}\right)$ are isoelectronic ions. Which statement about these systems is true?

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 13 - Classification of Elements and Periodicity in Properties>Exercise-4>Q 57

Select the incorrect statement.

EASY

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 13 - Classification of Elements and Periodicity in Properties>Exercise-4>Q 58

The electronegativities of acetylene, ethylene and ethane are in the order: