Atomic numbers of four elements are as follows : F(9), P(15), Cl(17), Ar(18). Which of the following two elements would be chemically similar?
View Answer Report Error Discuss
Non-metal oxides are usually
What is the action of dry HCl gas on dry litmus paper?
Name the Russian chemist who stated that the properties of elements are a periodic function of their atomic masses?
The pH of a solution, whose hydrogen ion concentration is 1 x 10 mole per litre, will be ____.
Which one of the following is a bad Thermal Conductor?
Which of the following is called Aurum?
Which of the following elements replaced eka-Aluminium in Mendeleev's Periodic table?