Group →	5
↓ Period
4	23  V
5	41  Nb
6	73  Ta
7	105  Db

A Group 5 element is one in the series of elements in group 5 (IUPAC style) in the periodic table, which consists of vanadium (V), niobium (Nb), tantalum (Ta), and dubnium (Db).

Like other groups, the members of this family show patterns in its electron configuration, especially the outermost shells, though niobium curiously does not follow the trend:

Z	Element	No. of electrons/shell
23	vanadium	2, 8, 11, 2
41	niobium	2, 8, 18, 12, 1
73	tantalum	2, 8, 18, 32, 11, 2
105	dubnium	2, 8, 18, 32, 32, 11, 2

Dubnium can only be produced in the laboratory, and does not exist in nature.

[edit] Biological occurrences

Of the group 5 elements, only vanadium has been identified as playing a role in the biological chemistry of living systems: it is involved in some of the enzymes of higher organisms, and also, unusually, in the biochemistry of some marine tunicates.

[edit] See also

Explanation of periodic table slice on right:

Transition metals

atomic number in black are solids

solid borders are older than the Earth (Primordial elements)

dotted borders are made artificially (Synthetic elements)

• doi:10.1016/S0920-5861(02)00318-8

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