Question

Ionisation potential trend of boron family
B Al. Ga. In. Tl.

Answer 1

-  Boron group elements incorporate any of the six chemical elements forming Group 13 (IIIa) of the periodic table.

-The elements are boron (B), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), and element 113 (briefly named ununtrium [Uut]).

-The boron family has an oxidation states +3 or +1. 

-They each have three electrons in their outermost shell.

-Ionization energy of Boron family are:

 

Boron  -  801 Kj/mol

Aluminum  -  578  Kj/mol

 

Gallium  -  558  Kj/mol

 

Indium  -  558  Kj/mol

 

Thallium  -  589  Kj/mol

 

Answer 2

B > Tl > Ga > Al > In

order of ionisation potential according to ncert