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5 October, 18:29

The correct formula for magnesium nitrate?

Question 12 options:

MgNO3

Mg2NO3

Mg (NO3) 2

Mg2 (NO3) 2

+2
Answers (2)
  1. 5 October, 18:34
    0
    Mg (NO3) 2

    Mg is + 2 in oxidation while NO3 is - 1, so you require two NO3 to have a neutral charge: 0
  2. 5 October, 18:59
    0
    Mg (NO3) 2

    Explanation:

    Look at the charges of the cation and anion. Mg has a + 2 charge while NO3 has a - 1 charge. You'll need 2 NO3 molecules to cancel the charge of Mg for a neutral compound. This is how they should be balanced unless they give a total charge in the question.
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