Which order of ionization energy is correct?
Correct answer: C. both b & c
- A. Si > P
- B. Mg > Al
- C. both b & c
Explanation
Correct: Both options b and c are correct:(b) Si > P: This follows the trend of increasing ionization energy across a period due to the increasing nuclear charge in Si compared to P.(c) Mg > Al: This also follows the periodic trend as Mg has a lower atomic number (lower nuclear charge) than Al, making it easier to remove an electron from Mg.Therefore, both orderings listed in options b and c are valid and true.
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About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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