Beryllium is placed above magnesium in the II group. Beryllium dust, therefore, when added to MgCl2 solution will:
Correct answer: A. Have no effect
- A. Have no effect
- B. Precipitate Mg metal
- C. Precipitate MgO
- D. Lead to dissolution of Be metal
Explanation
Although beryllium is above magnesium in the periodic table, it is less reactive than magnesium in the electrochemical series. In a displacement reaction, a more reactive metal can displace a less reactive one from its compound. Since beryllium is less reactive than magnesium, it will not displace magnesium from MgCl2 solution, resulting in no reaction. Thus, the correct answer is that beryllium dust will have no effect when added to the MgCl2 solution. The other options incorrectly assume a reaction or product formation that does not occur.
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