The modern periodic table has no gaps and has extended beyond what Mendeleev predicted. There were 64 elements when Mendeleev was working on his table and he predicted 4 more. Now the periodic ...

Assessing the existence of the "peninsula of extended stability," where superheavy ... which are important for an element's placement in the periodic table. "Due to the presence of huge ...

Six-mark questions are extended open response questions ... Two elements in group 1 of the periodic table are lithium and sodium. Very small pieces of lithium and sodium were reacted separately ...