Concept explainers
Element First Ionization Energy (kJImol) Second Ionization Energy (kiImol) I
K
419
3050
Ca
590
1140
75. Use principles of atomic structure to answer each of the following:
(a) The radius of the Ca atom is 197 pm; the radius of the
(b) The lattice energy of
(c) Given these ionization values, explain the difference between Ca and K with regard to their first and second ionization energies.
Element | First Ionization Energy (kJ/mol) | Second Ionization Energy (kJ/mol) |
K | 419 | 3050 |
Ca | 590 | 1140 |
(d) The first ionization energy of Mg is 738 kJ/mol and that of Al is 578 kJ/mol. Account for this difference.
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