Which of the following statements are correct about noble gases?
Correct answer: A. They belong to 18th group of modern periodic table
- A. They belong to 18th group of modern periodic table
- B. Except Rn, all the remaining atoms are present in the air.
- C. These elements belong to 17th group in IUPAC system.
- D. These are highly reactive elements.
- E. None of the above
Explanation
According to the periodic table, noble gases lie in 18th group also known as 0 group. So, option A is correct.
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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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