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    E
    F
    G
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    I
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    L
    M
    N
    O
    P
    R
    S
    T
    U
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    X
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    Z
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    A
    It is a chemical element of the periodic table that belongs to the group of metalloids, also called semimetals; It can be found in various forms, although it is rarely in the solid state.
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    B
    It is a chemical element of the periodic table whose symbol is Ba and its atomic number is 56.
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    C
    It is a chemical element with atomic number 24 found in group 6 of the periodic table of elements. Its symbol is Cr.
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    D
    It is a soft, silvery-white, bright alkali metal that quickly fogs the air, and is highly reactive. Like the other elements of group 1, it can spontaneously burn in air with a yellowish-violet flame, it reacts violently with water, giving off hydrogen and forms amalgam with mercury.
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    E
    Is a chemical element with symbol He
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    F
    Chemical element with atomic number 9 located in the group of halogens (group 17) of the periodic table of elements. Its symbol is F.
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    G
    Is a chemical element of the periodic table with atomic number 31 and symbol Ga
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    H
    It is the first element of the periodic table. It is the lightest chemical element that exists, its atom is made up of a proton and an electron and is stable in the form of a diatomic molecule (H2)
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    I
    It is a chemical element with atomic number 26 located in group 8, period 4 of the periodic table of elements. Its symbol is Faith
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    K
    is a chemical element of the periodic table whose symbol is Kr and its atomic number is 36.2 3
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    L
    it is a chemical element with symbol Li and atomic number 3. In the periodic table, it is found in group 1, among the alkaline elements.
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    M
    Chemical element, metallic, symbol Mg, placed in group IIa of the periodic system, with atomic number 12, atomic weight 24,312.
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    N
    is a chemical element with atomic number 10 and symbol Ne
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    O
    is a chemical element with atomic number 8 and represented by the symbol O.
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    P
    It is a chemical element with atomic number 78, located in group 10 of the periodic table of elements. Its symbol is Pt
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    R
    Chemical element, metallic, silver gray, brittle, symbol Ge, atomic number 32
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    S
    with a chemical element or with a radical. There are a few covalent compounds of ______, such as carbon sulfide (CS2) and hydrogen sulfide (H2S) that are also considered sulfides.
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    T
    is a chemical element with the symbol Ti and atomic number 22 that is located in group 4 of the periodic table of elements
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    U
    is a chemical element whose symbol is Fr and its atomic number is 87
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    V
    It is a chemical element with atomic number 23 located in group 5 of the periodic table of elements. Its symbol is V
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    X
    It is a chemical element of the periodic table whose symbol is Xe and its atomic number is 54.
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    Y
    is a chemical element of the periodic table whose symbol is Y and its atomic number is 39
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    Z
    It is a chemical element Its symbol is Zr.