Among group 14 elements name most metallic element

Among group 14 elements name  the elements having tendency to from \(p\pi -p\pi \) bonds.

Carbon form covalent compounds whereas lead form ionic compounds.why?

A colorless aqueous solution on adding water and on heating gave a white NH₄Cl and NH₄OH in excess resulted in the dissolution of some of the precipitate and a gelatinous precipitate is obtained.what is the hydroxide formed in aqueous solution?

Aluminium dissolves in mineral acids and aqueous alkalies and thus shows amphoteric character.A piece of aluminum foil is treated with dilute hydrochloric acid or dilute sodium hydroxide solution in a test tube and on bringing a burning matchstick near the mouth of the test tube, a pop sound indicates the evolution of hydrogen gas.The same activity when performed with concentrated nitric acid, reaction doesn't proceed, Explain the reason.

Complete the following reactions
\({ CaCO }_{ 3 }(aq)+{ CO }_{ 2 }(excess)\longrightarrow \)

Complete the following reactions
\({ SiO }_{ 2 }+NaOH\longrightarrow \)

What happens when boric acid is added to water?

When metal X is treated with sodium hydroxide, a white precipitate (A) is obtained, which is soluble in excess of NaOH to give soluble complex (B). Compound (A) is soluble in dilute HCl to form compound (C). The compound (A) when heated strongly gives (D), which is used to extract metal. Identify (X), (A), (B), (C) and (D). Write suitable equations to support their identities.

Explain the differences in properties of diamond and graphite based upon their structures.

How is boron obtained from borax? Give chemical equations with reaction conditions.