Which of the following does not react with steam even at red heat ?
A. Be
B. Mg
C. Ca
D. Sr
A. Be
B. Mg
C. Ca
D. Sr
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Correct Answer – A
Be is much less electropositive than other group 2 elements because its standard reduction potential `E^(@) (Be^(2+)//Be)` is much less negative than those for the rest of the group 2 elements and also for alkali metals.