General Knowledge - General Science - Discussion

Fe, Ni, Co, because there are 3rd orbit, empty due to they are Donner long pair of the electron so it's also called transitional element

The elements in the periodic table are often divided into four categories:

1. Main group elements.
2. Transition metals.
3. Lanthanides.
4. Actinides.

The main group elements include the active metals in the two columns on the extreme left of the periodic table and the metals, semi metals, and nonmetals in the six columns on the far right.

The transition metals are the metallic elements that serve as a bridge, or transition, between the two sides of the table.

These metals exhibit ferromagnetism, that is why they are called transition metals.

Why do we called it Transition metal ?

Is there any special reason ?

Any of the set of metallic elements occupying a central block (Groups IVB"VIII, IB, and IIB, or 4"12) in the periodic table, eg: Iron, manganese, chromium, and copper.

Chemically, they show variable valency and a strong tendency to form coordination compounds, and many of their compounds are coloured.

Is group d elements are transition elements ?

In periodic table they are arranged in transitions metals.

Yes, group-d elements have incomplete or half filled d-orbitals. So they are called transition metals.

Ni, Fe, Co are ferromagnetic substances, which are included under d-block or transition elements.

If you see in the periodic table ,they will occur in periods between 3 to 11.They are transition elements because their ultimate as well as pen-ultimate shell is incomplete.