$(Me)_2SiCl_2$ on condensation after hydrolysis will produce

What is aluminosilicate? Which ions are used to balance its electric charge?

The hydride of phosphorus is.........

Which of the following is an amphoteric oxide?

Evaluate the following statements related to group $14$ elements for their correctness.
$(A)$ Covalent radius decreases down the group from $C$ to $Pb$ in a regular manner.
$(B)$ Electronegativity decreases from $C$ to $Pb$ down the group gradually.
$(C)$ Maximum covalence of $C$ is $4$ whereas other elements can expand their covalence due to presence of $d$ orbitals.
$(D)$ Heavier elements do not form $p\pi-p\pi$ bonds.
$(E)$ Carbon can exhibit negative oxidation states.
Choose the correct answer from the options given below:

Which of the following anions is present in the chain structure of silicates?