it is related to the number of electrons that are in in the outer shell, and the total number of electrons
Nickel is a natural element and technetium is an artificial element.For example technetium is placed in the group 7 and period 5 of the periodic table and nickel is placed in the group 10 and period 4 of the table.
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The element with atomic number 85 is astatine, symbol At
lithium is the third element. It is placed in group-1
Each element in a period is in a transitional metal.
Chromium is the element in period 4 and group 6.
Helium is the element that is placed in period 1 and group 18 of the periodic table. It is inert in nature and hence stable.
Nickel is a chemical element, metal placed in the periodic table of Mendeleev in the group 10 and period 4.
Aluminium is a natural chemical element, metal, placed in the group 13 and period 3 of the periodic table of Mendeleev.
Nickel is a natural element and technetium is an artificial element.For example technetium is placed in the group 7 and period 5 of the periodic table and nickel is placed in the group 10 and period 4 of the table.
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Antimony (Sb) is not a mineral but a chemical element, a metalloid placed in the group 15 and period 5 of the periodic table of Mendeleev.
Nickel: Ni, atomic number 28, group 10, period 4.
Dubnium is an artificial chemical element, metal, solid, radioactive, placed in period 7 and group 5 of the periodic table of Mendeleev.
The element in period two group eighteen is neon.
The element with atomic number 85 is astatine, symbol At
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