☰
The d-And-f-Block Elements
What are actinoids? Mention two characteristics of actinoids.
The actinoid metals are all silvery in appearance but display a variety of structures. Actinides consist of a family of 14 elements that range in atomic numbers from 89 to 103. It may be represented by [Rn]5fx 6dy 7s2,where x varies from 0 to 14 and y = 0 or 1.
Two characteristic of actinoids:
1) These are highly reactive metals especially when are in finely divided state. They form a mixture of oxide and hydride by action of boiling water. They combine with non-metals even at moderate temperature. They show a greater tendency for complex formation.
2) It Show higher oxidation states such as +4, +5, +6, +7 also in addition to +3.
Sponsor Area
The outer electronic configuration of copper is 3d10 4s1, yet it is considered transition element. Why?
Name the first element of 3rd transition series.
Though copper, silver and gold have completely filled sets of d-orbitals yet they are considered as transition metals. Why?
Sponsor Area
Sponsor Area