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Periodic table, periods 1 to 3 without 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 first period has only two elements, w ...

Periodic table, nonmetals group with symbols (difficult)

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 ...

Periodic table, periods 4 and 5 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 fourth and fifth periods are eighteen ...

Periodic table, actinide group with symbols (difficult)

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 ...

Periodic table by groups with 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:

Metals

Semimetals

No metals

Noble gases

Th ...

Periodic table, halogen group without 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 ...

Periodic table, periods 1 to 4 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 first period has only two elements, t ...

Periodic table with symbols (difficult)

The periodic table of the elements is the way proposed by Dmitri Mendeléyev in 1869 to arrange the chemical elements, which are ordered by their atomic number, their electron configuration and ...

Periodic table, actinide group with symbols (difficult)

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 ...

Periodic table, group other metals without symbols (difficult)

The other metals are located between transition metals and semimetals. Sometimes known as block metals or poor metals, they tend to be soft and have low melting points, in addition to having greater e ...

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