There are 118 elements in the periodic table, each with a unique symbol and atomic number. Symbol: A one or two-letter abbreviation used to represent the element. Atomic number: The number of ...

Scientists use the periodic table to quickly refer to information about an element, like atomic mass and chemical symbol. The periodic table’s arrangement also allows scientists to discern trends in ...

In this periodic table of elements quiz, you have 10 minutes to name as many elements as you can, given only their symbol, ...

At that time, he had only ... elements in group 1 are reactive metals, and all the elements in group 0 are unreactive non-metals. The zigzag, staircase, line in the diagram of the periodic table ...