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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 ...
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 ...
The alkaline earths take their name from the one who received their oxides, "earths", which have alkaline properties. They are harder than alkali metals, have shine and are good electrical c ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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