The longest period in the modern periodic table is:
Correct answer: B. 7th
- A. 6th
- B. 7th
- C. 2nd & 3rd both
- D. Valence electrons
Explanation
The seventh period consists of 18 elements, making it the longest period in the modern periodic table.
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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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1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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