What is the correct order of melting point of $14^{th}$ group elements?

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Important Questions on p- Block Elements

EASY

Chemistry>Inorganic Chemistry>p- Block Elements>Physical Properties of Group 14 Element

Identify the correct statements regarding fullerene.

$i .$ It has $60$ vertices.
$ii .$ All the carbon atoms are in the ${sp}^{3}$ hybridisation.
$iii .$ The number of rings having six carbons each is $20$ and the number of rings having five carbons each is $12$ .
$iv .$ All the $C - C$ bond lengths in it are equal.

EASY

Chemistry>Inorganic Chemistry>p- Block Elements>Physical Properties of Group 14 Element

During the borax bead test with

{CuSO}_{4}

, a blue green colour of the bead was observed in oxidising flame due to the formation of

EASY

Chemistry>Inorganic Chemistry>p- Block Elements>Physical Properties of Group 14 Element

How many five-membered and six-membered rings are present in a buckmisterfullerene

(C_{60}) ?

MEDIUM

Chemistry>Inorganic Chemistry>p- Block Elements>Physical Properties of Group 14 Element

An allotrope of carbon which exhibits only two types of

C - C

bond distance of

143.5 pm

and

138.3 pm

, is

EASY

Chemistry>Inorganic Chemistry>p- Block Elements>Physical Properties of Group 14 Element

The correct order of catenation is:

MEDIUM

Chemistry>Inorganic Chemistry>p- Block Elements>Physical Properties of Group 14 Element

The relative order of electronegativity of

C, Ge

, and

Pb

MEDIUM

Chemistry>Inorganic Chemistry>p- Block Elements>Physical Properties of Group 14 Element

Given below are two statements :
Statement I : Upon heating a borax bead dipped in cupric sulphate in a luminous flame, the colour of the bead becomes green.
Statement II : The green colour observed is due to the formation of copper(I) metaborate In the light of the above statements, choose the most appropriate answer from the options given below:

MEDIUM

Chemistry>Inorganic Chemistry>p- Block Elements>Physical Properties of Group 14 Element

When borax is heated with