Name the type of the structure of silicate in which one oxygen atom of $[SiO_4]^{4-}$ is shared?

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'.

Assertion : Silicones are hydrophobic in nature.
Reason : $Si-O-Si$ linkages are moisture sensitive.

In the following reaction,assign the state for the underlined atom in the product of complete hydrolysis at $R.T.$:
$\underline{S}OF_4 + H_2O \longrightarrow H_2SO_4 + HF$

Explain the physical properties of group $14$ elements.

$NaOCl$ is used as a bleaching agent and sterilising agent. It can be synthesized by the action of: