Elements in the same vertical group of the periodic table have same_______________?
Correct answer: A. Number of valence electrons
- A. Number of valence electrons
- B. Atomic number
- C. Atomic mass
- D. Atomic volume
Explanation
Elements in the same vertical group generally have the same number of valence electrons, especially in the main-group elements, giving them similar chemical behaviour. Atomic number, atomic mass, and atomic volume change from one element to another, so option b is the likely mistake for confusing group position with atomic number.
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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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