f block

 Transuranic Elements 

1. Transuranic elements ( after uranium) are the elements whose atomic number is greater than 92 i.e Z>92 ( Z is referred as atomic number).

2. All actinoids (Z=89 to Z= 103) are radio active.

3. Th, Pa, U are found in nature and are radio active.

4. Elements from 93 to 130 are artificial/magnetic and are radioactive.

5. First man made is Technetium (Tc).

6. Man made radio active lanthanide is Promethium (Pm).

More about Periodic Table

* Maximum atomic radius in periodic table is of NOBEL GASES.

* Minimum atomic radius is of HALOGENS.

* Smallest cation is H^+.

* Smallest anion is F^-.

* Minimum first ionization energy is of ALKALI METALS.

* Minimum second ionization energy is of ALKALINE EARTH.

* Maximum ionization energy is of HELIUM (Nobel gases are highly ionized).

* Maximum electron affinity in periodic table is of CHLORINE.

* Maximum electron negativity is of FLOURINE.