Question

Name the elements whose oxides form strong alkalis?​

Answer 1

Answer:

Alkali metal peroxides

Lithium peroxide (Li2O2) is a white solid that melts at 195 °C. ...

Sodium peroxide (Na2O2) is a pale yellow solid that melts at 460 °C and decomposes at 657 °C.

Potassium peroxide (K2O2) is a yellow solid that melts at 490 °C.

Rubidium peroxide (Rb2O2) is produced when rubidium stands in air

Answer 2

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Explanation:

The alkali metals react with oxygen to form several different compounds: suboxides, oxides, peroxides, superoxides, and ozonides. They all react violently with water.