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Elemental germanium, tin, lead

 Last Update: 2021-06-30
 Source: Internet
 Author: User

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Germanium is a silver-white metal
.

There are three allotropes of tin: white tin, gray tin and brittle tin; white tin is a thermodynamically designated element with good ductility and can be made into utensils; gray tin is in the form of gray powder

Ge does not react with non-oxidizing acids
.

Sn and Pb can react with non-oxidizing acids, but the reaction between Sn and dilute hydrochloric acid is slow.

Ge, Sn, and Pb can all react with oxidizing acids
.

Ge and Sn react with concentrated nitric acid to form the most expensive oxyacid, while Pb reacts with concentrated nitric acid to form Pb(NO ₃ ) ₂

Extremely dilute nitric acid reacts with Sn to form tin salt in a low valence state

3Sn+8HNO ₃ =3Sn(NO ₃ ) ₂ +2NO+4H ₂ O

Ge is hardly soluble in alkali, but Sn and Pb can react with strong alkali and release H ₂

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