While these elements are ductile and malleable, they are not the same as the transition elements. The 'other metals' elements are located in groups 13, 14, and 15. This is why they often exhibit several common oxidation states. Their valence electrons are present in more than one shell. The 38 elements in groups 3 through 12 of the periodic table are called 'transition metals.' As with all metals, the transition elements are both ductile and malleable, and conduct electricity and heat. All alkaline earth elements have an oxidation number of +2, making them very reactive. The alkaline earth elements are metallic elements found in the second group of the periodic table. The alkali metals are softer than most other metals. As with all metals, the alkali metals are malleable, ductile, and are good conductors of heat and electricity.

Therefore, they are ready to lose that one electron in ionic bonding with other elements. These metals have only one electron in their outer shell. The alkali metals, found in group 1 of the periodic table, are highly reactive metals that do not occur freely in nature. For our purposes we will define the following ten families: The Periodic table can also be divided into several families of elements each having similar properties. Elements of each group had similar properties. The modern one states that the properties vary with atomic number, not weight.Įlements in Mendeleev's table were arranged in rows called periods. His periodic law states that the chemical and physical properties of the elements vary in a periodic way with their atomic weights. He observed that many elements had similar properties, and that they occur periodically. Mendeleev created the first periodic table based on atomic weight. They both created similar periodic tables only a few months apart in 1869. The modern periodic table, based on atomic number and electron configuration, was created primarily by a Russian chemist, Dmitri Ivanovich Mendeleev, and a German physicist, Julius Lothar Meyer, both working independently. Further information is provided in our H ealth and Safety guidance.Chemistry and Periodic Table Applications Do NOT follow suggestions which conflict with current advice from CLEAPSS , SSERC or recent safety guides. eLibrary users are responsible for ensuring that any activity, including practical work, which they carry out is consistent with current regulations related to h ealth and s afety and that they carry an appropriate risk assessment.

Visit the secondary science webpage to access all lists: Whilst this list provides a source of information and ideas for experimental work, it is important to note that recommendations can date very quickly.

the order of metals and carbon in the reactivity series.

how patterns in reactions can be predicted with reference to the periodic table.

The resources link to the following topics : This list provides some advice on carrying out some traditional demonstrations and ideas for practicals which which explore reactivity. Practical activities which look at the reactions of different groups of elements are always exciting. Patterns in reactions, with reference to the periodic table

Reactivity trends on the periodic table