Study the information given below for magnesium and calcium.

      

Study the information given below for magnesium and calcium.

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(a) Explain the trend in ionisation energies between magnesium and calcium.

(b) Explain why the two elements have higher 2nd ionisation energies than the 1st one.

  

Answers


Maurice
(a) Magnesium has smaller atomic and ionic sizes resulting in stronger nuclear attraction for valence electrons as compared to calcium.

(b) The nuclei formed after the first ionisation have greater number of protons or nuclear charge than the respective original atoms making it more difficult to remove the second electron.
maurice.mutuku answered the question on August 14, 2019 at 13:57


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