Question 1: Upto which element, the Law of Octaves was found to be applicable
Question 2: According to Mendeleev's Periodic Law, the elements were arranged in the periodic table in the order of
Question 3: In Mendeleev’s Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the periodic table later
Question 4: Which of the following statement (s) about the Modern Periodic Table are incorrect
Question 5: Which of the given elements A, B, C, D and E with atomic number 2, 3, 7, 10 and 30 respectively belong to the same period?
Question 6: The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belongs to the same group?
Question 7: Where would you locate the element with electronic configuration 2,8 in the Modern Periodic Table?
Question 8: An element which is an essential constituent of all organic compounds belongs to
Question 9: Which of the following statements about the Modern Periodic Table is correct:
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