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Tabla periódica por subgrupos (difícil) (Secundaria-Bachillerato)

Following a classification according to the bonding and ionization properties of the elements, the elements of the periodic table can be classified as:

Alkalines

Alkaline earth

Transition metals

O ...

Periodic table, alkaline group with symbols (difficult)

Alkalines are named because they produce strong bases (or alkalis) that neutralize acids after reacting with water. They are of very low density and good conductors of heat and electricity. They are n ...

Periodic table, periods 6 and 7 with symbols (difficult)

In the periodic table of the elements, each row of the table is called the period. The number of levels an atom has determines the period to which it belongs.

The periodic table of the elements is the ...

Periodic table, alkaline group without symbols (difficult)

Alkalines are named because they produce strong bases (or alkalis) that neutralize acids after reacting with water. They are of very low density and good conductors of heat and electricity. They are n ...

Periodic table by subgroups without symbols (difficult)

Following a classification according to the bonding and ionization properties of the elements, the elements of the periodic table can be classified as:

Alkalines

Alkaline earth

Transition metals

O ...

Periodic table, halogen group with symbols (difficult)

Halogens (from the Greek, salt-forming) are very useful elements since, as the name implies, they form salts when they react with metals. Without the halogens we would not have sodium chloride, better ...

Bohr's Atomic Model (Easy)

The Danish physicist Niels Bohr proposed, in 1913, an atomic model capable of explaining the stability of matter. Bohr, based on Max Planck's quantum theory and Ernest Rutherford's nuclear the ...

Periodic table, metalloid group without symbols (difficult)

Semimetals, also known as metalloids, share properties of both metals and nonmetals. Metallic in their appearance, they can be both bright and opaque with an easily modifiable shape but they are not g ...

Periodic table, alkaline earth group with symbols (difficult)

The alkaline earths take their name from the one who received their oxides, "earths", which have alkaline properties. They are harder than alkali metals, have shine and are good electrical c ...

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