Embibe Experts Solutions for Chapter: p- Block Elements, Exercise 1: AP EAPCET - 20 Aug 2021 Afternoon

The incorrect statement among the following is /are

Assertion$\left(\mathrm{A}\right):$ The colour of old lead paintings can be restored by washing them with a dilute solution of ${\mathrm{H}}_2{\mathrm{O}}_2$.
Reason$\left(\mathrm{R}\right):$ Hydrogen peroxide reduces $\mathrm{PbS}$ to $\mathrm{Pb}$

The structure of diborane ${\mathrm{B}}_2{\mathrm{H}}_6$ is given below. Identify the bond angles $\mathrm{x}, \mathrm{y}.$ In diborane, which bonds are commonly known as banana-bonds

The correct order of acidic character of the following is:

Due to $\mathrm{p\pi }-\mathrm{p\pi }$ bonding interactions, nitrogen for ${\mathrm{N}}_2$ but phosphorus forms and does not form a diatomic molecule.

Identify the incorrect statements among the following?
(i) ${\mathrm{SF}}_6$ does not react with water
(ii) ${\mathrm{SF}}_6$ is ${\mathrm{sp}}^3\mathrm{d}$ hybridized
(iii) ${\mathrm{S}}_2{\mathrm{O}}_3^{2-}$ is a linear ion
(iv) There is no $\mathrm{\pi }$-bonding in ${\mathrm{SO}}_4^{2-}$ ion

Which statements among the following are correct about Helium?
(i) Liquid helium is used to sustain powerful superconducting magnets.
(ii) Liquid helium is useful to carry low temperature experiments.
(iii) It is a heavy gas.
(iv) It is a flammable gas.

Match the following compounds with their corresponding physical properties: