Match List-I (Symbol of Element) with List-II (Group of Element): A. Sm - 1. Transition Elements; B. Cs - 2. Alkali Metals; C. Os - 3. Actinoid Elements; D. Np - 4. Lanthanoid Elements. Codes:

Element X forms a chloride with the formula XCl₂, which is a solid with high melting point. X would most likely be in the same group of periodic table as

Consider the following statements with respect to noble metals : 1. Noble metals are found in pure form in nature. 2. Uranium and lead are examples of noble metal. Which of the above statements is ar…

Consider the following statements relating to the Modern Periodic Table: 1. The atomic radius increases on moving from left to right across a period. 2. Germanium, Tellurium, and Copper are transitio…

Which of these is not a d-block element?

If atomic number of an element is 11, the correct name, symbol and valency are :