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Which of the following metals is rendere...

Which of the following metals is rendered passive by conc. `HNO_(3)`?

A

Ba

B

Mg

C

Ca

D

Be

Text Solution

Verified by Experts

The correct Answer is:
D
All alkaline earth metals react with acids to liberate `H_(2)` gas. On account of the least negative `E^(@)(M^(2+)//M)`, be reacts slowly. Because of the formation of BeO on the surface, metal Be is rendered pasive by conc. `HNO_(3)`.
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