NEET
- Exam
- NEET
- Subject
- Chemistry
- Chapter
- s Block Elements
NEET · Chemistry · s Block Elements
What causes alkali metals to tarnish in dry air?
What causes alkali metals to tarnish in dry air?
Options
- AFormation of nitrides
- BFormation of hydroxides
- CFormation of peroxides
- DFormation of superoxides
Correct answer
B. Formation of hydroxides
Step-by-step solution
Alkali metals tarnish in dry air due to the formation of their oxides, which subsequently react with moisture in the air to form hydroxides.