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Which of the elements having following positions, have same number of valence electrons as that of element with atomic number 6? (i) Group 14 and period 5 (ii) Group 14 and period 4 (iii) Group 6 and period 4 (iv) Group 14 and period 3 (A) (i) and (ii) only (B) (i), (ii) and (iii) only (C) (i), (ii) and (iv) only (D) All of these |
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Answer» Correct option (C) (i), (ii) and (iv) only Explanation: For atomic number 6, the electronic configuration is 2, 4 and it is carbon atom. Carbon has 4 valence electrons and, it is a member of group 14 in the periodic table. All the elements in this group have similar electronic configurations hence, have same number of valence electrons. |
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