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प्रश्न
The atomic numbers of three elements, X, Y and Z are 9, 11 and 17 respectively. Which two of these elements will show similar chemical properties? Why?
लघु उत्तर
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उत्तर
The elements X and Z will show similar chemical properties.
X (Z = 9): Fluorine (F) → 7 valence electrons
Z (Z = 17): Chlorine (Cl) → 7 valence electrons
Both belong to Group 17 (halogens) and have the same number of valence electrons. Therefore, they have similar chemical properties.
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