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The periodic table

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Question 6

Which statement(s) for Group 2 elements is/are correct?

  1. The first ionisation energy of magnesium is greater than the first ionisation energy of barium.
  2. A strontium ion, Sr2+\text{Sr}^{2+}Sr2+, contains a total of 8 electrons in s orbitals.
  3. The equation for the reaction of barium with water is:
Ba+H2O→BaO+H2 \text{Ba} + \text{H}_2\text{O} \rightarrow \text{BaO} + \text{H}_2 Ba+H2​O→BaO+H2​

Only 1 and 2

Only 1 and 3

Only 2 and 3

1, 2 and 3

The periodic table Questions

  1. A Level
  2. /Chemistry
  3. /The periodic table