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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lithium is the third element. It is placed in group-1
Each element in a period is in a transitional metal.
Ir refers to iridium element that is placed in group-9 and period-6 in the modern periodic table.
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.
Chromium is the element in period 4 and group 6.
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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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.
lithium is the third element. It is placed in group-1
The element phosphorous (P) is located in group 15, period 2.
Seaborgium is a member of the transactinoids family; it is placed in group 4 and period 7 of the periodic table.
Each element in a period is in a transitional metal.