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Correct order of atomic radius is:

Correct answer: A. V < Ti

  • A. V < Ti
  • B. Cl > S
  • C. Rb > Cs
  • D. Ne > Be

Explanation

The correct order of atomic radius for Vanadium and Titanium is V > Ti because atomic radius decreases as you move from left to right across a period due to the increase in nuclear charge. Vanadium is located to the left of Titanium in the periodic table, confirming that Vanadium has a larger atomic radius.Option B is incorrect because, although both elements are in the same period, atomic radius decreases from left to right, meaning sulfur (S) should be larger than chlorine (Cl).Option C is incorrect as well because atomic radius increases going down a group, which means cesium (Cs) should be larger than rubidium (Rb).Option D is also incorrect; in the same period, atomic radius decreases from left to right, thus beryllium (Be) should indeed be larger than neon (Ne).

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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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