Multiple choice

Which of the following statements is incorrect?

  1. The first ionization potential of Al is less than the first ionization potential of Mg.

  2. The second ionization potential of Mg is greater than the second ionization potential of K.

  3. Na has higher value of first ionization potential than Mg.

  4. Mg2+ has zero unpaired electron.

  5. Magnesium hydroxide is used as antacid.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mg+ requires less energy for further ionization than K+ due to noble gas configuration.

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