Which of these is most stable?

Important Questions on The p-Block Elements

HARD

Chemistry

IMPORTANT

Chemistry Crash Course JEE Advanced>Chapter 20 - The p-Block Elements>Exercise 1>Q 25

Which is correct?

EASY

Chemistry

IMPORTANT

Chemistry Crash Course JEE Advanced>Chapter 20 - The p-Block Elements>Exercise 1>Q 26

${\mathrm{N}}_2{\mathrm{O}}_5$ is heated in presence of sodium to produce a solid and a gaseous product. Hybridization of central atom of anion in the solid product is-

MEDIUM

Chemistry

IMPORTANT

Chemistry Crash Course JEE Advanced>Chapter 20 - The p-Block Elements>Exercise 1>Q 27

Three allotropes $\left(\mathrm{A}\right), \left(\mathrm{B}\right)$ and $\left(\mathrm{C}\right)$ of phosphorous in the following change are respectively -

 

MEDIUM

Chemistry

IMPORTANT

Chemistry Crash Course JEE Advanced>Chapter 20 - The p-Block Elements>Exercise 1>Q 28

Of the following, which has three electron bond in its structure?

MEDIUM

Chemistry

IMPORTANT

Chemistry Crash Course JEE Advanced>Chapter 20 - The p-Block Elements>Exercise 1>Q 29

Which of the following leaves no residue on heating ?

EASY

Chemistry

IMPORTANT

Chemistry Crash Course JEE Advanced>Chapter 20 - The p-Block Elements>Exercise 1>Q 30

${\mathrm{HNO}}_3+{\mathrm{P}}_4{\mathrm{O}}_{10}⟶{\mathrm{HPO}}_3+\mathrm{A};$ The product $\mathrm{A}$ is -

EASY

Chemistry

IMPORTANT

Chemistry Crash Course JEE Advanced>Chapter 20 - The p-Block Elements>Exercise 1>Q 31

An inorganic salt $\left(\mathrm{A}\right)$ is decomposed at about $523 \mathrm{K}$ to give products $\left(\mathrm{B}\right)$ and $\left(\mathrm{C}\right)$. compound $\left(\mathrm{C}\right)$ is a liquid at room temperature and is neutral to litmus paper while oxide $\left(\mathrm{B}\right)$ on burning with white phosphorous, given a dehydrating agent $\left(\mathrm{D}\right)$. compounds $\left(\mathrm{A}\right), \left(\mathrm{B}\right), \left(\mathrm{C}\right)$ and $\left(\mathrm{D}\right)$ will be identified as -

EASY

Chemistry

IMPORTANT

Chemistry Crash Course JEE Advanced>Chapter 20 - The p-Block Elements>Exercise 1>Q 32

The number of molecules of water needed to convert one molecule of ${\mathrm{P}}_2{\mathrm{O}}_5$ into Ortho phosphoric acid is: