Which of the following is not correct?

  • A
    Lead does not show catenation
  • B
    Buckminster fullerene contains $20$ six-membered rings and $12$ five-membered rings
  • C
    Stability order of $GeX_2, SnX_2$ and $PbX_2$ is $GeX_2 < SnX_2 < PbX_2$
  • D
    The number of metalloids in group $14$ elements is $2$

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Which one of the following is a correct set?

In the following reaction,assign the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$: $\underline{C}O + H_2O \longrightarrow \text{No reaction}$

Difficult
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Silicon is an important constituent of which of the following?

Which of the following forms cyclic silicones on hydrolysis?

Assertion : $Pb^{4+}$ compounds are stronger oxidizing agents than $Sn^{4+}$ compounds.
Reason : The higher oxidation states for the group $14$ elements are more stable for the heavier members of the group due to 'inert pair effect'.

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