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Explain why the first ionisation energy is lower for Al than Mg? O The valence electron in Al is less shielded from the nucleus and so the electron will observe a larger effective nuclear charge. O The valence electron is removed from the 3s orbital for Al rather than 3p orbital for Mg O This atomic radius of Al is larger therefore the valence electron is further away from the nucleus. O The valence electron in Mg is more shielded from the nucleus and so the electron will observe a larger effective nuclear charge. O The electronegativity of Mg is greater than Al and so will result in Mg having a higher tendency to attract covalently bound electrons. O The valence electron is removed from the 3p orbital for Al rather than 3s orbital for Mg

Explain why the first ionisation energy is lower for Al than Mg? O The valence electron in Al is less shielded from the nucleus and so the electron will observe a larger effective nuclear charge. O The valence electron is removed from the 3s orbital for Al rather than 3p orbital for Mg O This atomic radius of Al is larger therefore the valence electron is further away from the nucleus. O The valence electron in Mg is more shielded from the nucleus and so the electron will observe a larger effective nuclear charge. O The electronegativity of Mg is greater than Al and so will result in Mg having a higher tendency to attract covalently bound electrons. O The valence electron is removed from the 3p orbital for Al rather than 3s orbital for Mg

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Explain why the first ionisation energy is lower for Al than Mg? O The valence electron in Al is less shielded from the nucleus and so the electron will observe a larger effective nuclear charge. O The valence electron is removed from the 3s orbital for Al rather than 3p orbital for Mg O This atomic radius of Al is larger therefore the valence electron is further away from the nucleus. O The valence electron in Mg is more shielded from the nucleus and so the electron will observe a larger effective nuclear charge. O The electronegativity of Mg is greater than Al and so will result in Mg having a higher tendency to attract covalently bound electrons. O The valence electron is removed from the 3p orbital for Al rather than 3s orbital for Mg
Transcribed Image Text:Explain why the first ionisation energy is lower for Al than Mg? O The valence electron in Al is less shielded from the nucleus and so the electron will observe a larger effective nuclear charge. O The valence electron is removed from the 3s orbital for Al rather than 3p orbital for Mg O This atomic radius of Al is larger therefore the valence electron is further away from the nucleus. O The valence electron in Mg is more shielded from the nucleus and so the electron will observe a larger effective nuclear charge. O The electronegativity of Mg is greater than Al and so will result in Mg having a higher tendency to attract covalently bound electrons. O The valence electron is removed from the 3p orbital for Al rather than 3s orbital for Mg
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