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Compounds of some nonmetals
SUBJECT : Engineering Chemistry
AUTHOR : K K Padmanabha
PUBLISHED ON : 29/03/18
NUMBER OF PAGES : ( 8 Pages)
PRICE : Rs 5.2

Boron was first isolated by Dary in 1807 by fusing boric acid with potassium. It does not exist in Free State in nature. It occurs mainly in the form of salts of boric acid. Boron - At. No. 5 (1s22s22p1). It has three valence electrons. It is trivalent.


 
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