Identify the correct statements from the foll | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The melting and boiling points of group $13$ elements are lower than those of corresponding group $14$ elements due to the stronger metallic bondi

Vedclass · Accepted Answer

$ii, iii$ only

Vedclass · Answer

(C) The melting and boiling points of group $13$ elements are lower than those of corresponding group $14$ elements due to the stronger metallic bonding in group $14$ elements. Thus,statement $(i)$ is incorrect.$SiO$ is less stable than $SiO_2$ and exists only at high temperatures. Thus,statement $(ii)$ is correct.$PbI_4$ does not exist because $Pb$ prefers the $+2$ oxidation state over the $+4$ state due to the inert pair effect. Thus,statement $(iii)$ is correct.Buckminster fullerene $(C_{60})$ contains $20$ six-membered rings and $12$ five-membered rings. Thus,statement $(iv)$ is incorrect.Therefore,the correct statements are $(ii)$ and $(iii)$.

Similar Questions

Concentrated hydrochloric acid,when exposed to air,sometimes produces a white cloud of smoke. What is the explanation for this?

Which are the various forms of silica?

At high temperature,nitrogen combines with calcium carbide $(CaC_2)$ to give:

In the laboratory,silicon can be prepared by the reaction:

Vedclass Test Series

Exam Paper Generator

Online Exam Module