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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 ...
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 first period has only two elements, w ...
Nonmetals are bad conductors of electricity and heat. They are very weak, so they cannot stretch or become a sheet. They can be solids, liquids or gases, their melting and boiling points being depende ...
Learn with this interactive gamee the components of the Female Endocrine System. You have to choose the right answer from a list of several options. Zoom in or zoom out the image in order to adjust i ...
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 fourth and fifth periods are eighteen ...
Actinides are also known as "internal transition elements." They have radioactive properties and are extremely unstable, having a very short half-life. Within the periodic table, they are us ...
Following a classification according to the bonding and ionization properties of the elements, the elements of the periodic table can be classified as:
Metals
Semimetals
No metals
Noble gases
Th ...
Learn with this interactive gamee the components of the Male Endocrine System. You have to choose the right answer from a list of several options. Zoom in or zoom out the image in order to adjust it ...
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 ...
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 first period has only two elements, t ...
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