Which of the following does not react with water?
Correct answer: D. Be
- A. Li
- B. Na
- C. Mg
- D. Be
Explanation
d) Be (Beryllium): This is the correct option. Beryllium does not react with water. It has a strong affinity for oxygen and forms a protective oxide layer, which prevents further reactions with water or air.
This question appeared on the UHS MDCAT 2008 paper, which you can sit online with every answer explained.
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About Reactions of Group II Elements
Group II reactions cover the behaviour of beryllium, magnesium, calcium, strontium and barium with water, oxygen, halogens, acids and nitrogen. The trends in reactivity, hydroxide solubility and basicity, along with the thermal decomposition of carbonates and nitrates, depend on increasing atomic size down the group.
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