Carbon and silicon are mainly tetravalent while germanium, tin and lead also show divalency. Explain.

C and Si are always tetravalent but Ge, Sn , Pb show divalency . Why ?

Explain tetravalency of carbon.

Why Carbon acts as insulator while Silicon and Germanium act as semiconductors?

Tin and lead form divalent Sn (II) and lead (II) and tetravalent i.e., Tin (IV) and lead. (IV) compounds. Tetravalent and dioxides of lead and Tin are amphoteric in nature. Lead tetra fluorite is ionic solid where as PbCl_(4) is covalent. Pbl_(4) does not exist. Lead (II) halides are white whereas Pbl_(2) is yellow in colour. Q. Reaction of SnO with NaOH gives

Tin and lead form divalent Sn (II) and lead (II) and tetravalent i.e., Tin (IV) and lead. (IV) compounds. Tetravalent and dioxides of lead and Tin are amphoteric in nature. Lead tetra fluorite is ionic solid where as PbCl_(4) is covalent. Pbl_(4) does not exist. lead (II) halides are white whereas Pbl_(2) is yellow in colour. Q. SnCl_(2) is solid whereas SnCl_(4) is liquid, this is because?

Tin and lead form divalent Sn (II) and lead (II) and tetravalent i.e., Tin (IV) and lead. (IV) compounds. Tetravalent and dioxides of lead and Tin are amphoteric in nature. Lead tetra fluorite is ionic solid where as PbCl_(4) is covalent. Pbl_(4) does not exist. lead (II) halides are white whereas Pbl_(2) is yellow in colour. Q. SnCl_(2) is solid whereas SnCl_(4) is liquid, this is because?