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The third period contains eight elements: sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine and argon. The first two, sodium and magnesium, are members of the s-block of the periodic table, while the others are members of the p-block. All of the period 3 elements occur in nature and have at least one stable isotope.
- Periodic table - Wikipedia
The periodic table, also known as the periodic table of the...
- Period (periodic table) - Wikipedia
Contents. hide. (Top) Periods. Period 1. Period 2. Period 3....
- Period 3 element - Simple English Wikipedia, the free ...
A period 3 element is an element found on the third period...
- Periodic table - Wikipedia
A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z ). [1] The definitive visualisation of all 118 elements is the periodic table of the elements, whose history along the principles of the periodic law was one of the ...
Grupo 3 é o Sc, Y, e Lu, Lr. O lutécio (Lu) e o laurêncio (Lr) ocupam as duas posições abaixo do ítrio. Esta variante mantém as quatorze colunas do bloco f e fragmenta os lantanídeos e actinídeos.
Periodic table. The periodic table is a table that puts all known chemical elements in a specific order. Elements that have similar characteristics are often put near each other. In the table, the elements are placed in the order of their atomic numbers starting with the lowest number of one, hydrogen.
