1. Upto which element, the Law of Octaves was found to be applicable.

2. According to Medeleev’s Periodic Law, the elements were arranged in the periodic table in the order of

3. Consider the following elements:

4. The electronic configuration of the atom of an element X is 2, 4, 8. In the modern periodic table, the element X is placed in:

5. Which of the following element would lose an electron easily?

6. The element A, B, C, D and E have atomic numbers 9, 11, 17, 12 and 13 respectively. The pair of elements which belongs to the same group of the periodic table is:

7. Which one of the following does not increase while moving down the group of the periodic table?

8. The Newlands Law of Octaves for the classification of elements was found to be applicable only up to the element

9. An element X forms an oxide X^g. In which group of Modem periodic table is this element placed?

10. The atomic numbers of the elements Na, Mg, K and Ca are 11, 12, 19 and 20 respectively. The element have the largest atomic radius is: