3. 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) calcium
(b) carbon
(c) silicon
(d)iron
Answers
Answered by
2
Answer:
An element is likely to be. calcium reacts with oxygen and forms calcium oxide which as high melting point and is soluble in water.
Answered by
2
Answer:
a
Explanation:
If the product has a high melting point, then it is an ionic compound as well as an oxide. Since the oxides carbon and silicon are covalent compounds, then the choices b and c are wrong. iron and calcium both form ionic oxides, but the oxides of iron are insoluble in water, whereas calcium oxide is soluble in water. so the answer is a.
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