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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, 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 ...

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 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, 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 without 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 without 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, periods 1 to 3 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, w ...

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 ...

Periodic table by SDPF blocks with symbols (easy)

Currently, the periodic table is organized and subdivided into four blocks depending on the last orbital of the electronic configuration. These blocks are called:

Block s: in these elements the most ...

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