Question

Which metal has a greater tendency to form metal oxide ?

• A. $Cr$
• B. $Fe$
• C. $Al$
• D. $Ca$

Answer 1

Answer: (D)

$Ca$

Answer 2

Greater the stability of oxide, greater is the ease of its formation. Generally ionic oxides are more stable than covalent oxides and among the given metals only $Ca$ form ionic oxide. Hence, $Ca$ has greater tendency to form oxide.