Write the general and empirical formula of silicone.

Which of the following is known as silicone?

For correct statement use $T$ and for incorrect use $F$:
$(A)$ Hydrolysis of Marshall's acid gives $H_2SO_4$ and $H_2O_2$ as final products.
$(B)$ In $SCNSiH_3$ structure,the geometry around $N$ is bent.
$(C)$ The basic unit for silicates is $SiO_4^{4-}$.
$(D)$ $NH_4Cl + NaOH \to NH_3 \uparrow$.

Which of the following elements shows a stable $+2$ oxidation state?

Which of the following compounds is $NOT$ acidic in nature?

The last element of group-$14$ is found to be