An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be
A. Ca
B. C
C. Si
D. Fe
Answer:A
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be
A. Ca B. C C. Si D. Fe
Explanation: Ionic Oxides have high melting and boiling point Also disolved in water so, calcium reacts with oxygen to give calcium oxide (CaO) which is having a high melting point and dissolves in water to form calcium hydroxide (Ca(OH)2)along with the release of large amount of thermal energy.