Multiple choice general knowledge science & technology

magnesium nitrite

  1. Mg(NO2)2

  2. Mg3(NO2)2

  3. Mg2(NO2)3

  4. None of the above
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A Correct answer
Explanation

Magnesium is Mg2+. Nitrite (NO2-) has a -1 charge. Two nitrite ions are needed to balance +2, giving Mg(NO2)2. Mg3(NO2)2 doesn't balance correctly, and Mg2(NO2)3 would be Mg4+.

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