An element A with atomic number 112 has recently been discovered. Predict its electronic configuration and suggest the group in which this element be placed.
What are the advantages of periodic classification of elements?
(i) The classification simplifies the learning of chemistry.
(ii) Periodic table explains clearly why elements in a group display similar properties. The periodic table serves as a guide for scientific investigations.
Which radius, vander Waal's or covalent, is larger for an atom?
How is the atomic radius of an element actually expressed?