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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, 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, 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, period 4 and 5 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 fourth and fifth periods are eighteen ...

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

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, 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 ...

Chemical elements: discovery in ancient times

Click on the discovery of these chemical elements and drag them to the right places.Enlarge or reduce the image with the zoom and adjust its size to the screen of your device. You can also act on the ...

Chemical elements: discovery in ancient times

Display the list and select the discovery of these chemical elements that correspond.Enlarge or reduce the image with the zoom and adjust its size to the screen of your device. You can also act on the ...

Chemical elements: discovery in ancient times

Place the discovery of these chemical elements in chronological order.Enlarge or reduce the image with the zoom and adjust its size to the screen of your device. You can also act on the image and drag ...

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