Boron cannot form which one of the following anions?
(1) BO2-
(2) BF63-
(3) BH4-
(4) B(OH)4-
Due to absence of low lying vacant d orbital in B, sp3d2hybridization is not possible hence BF63-will not formed.
Which among the following is an endothermic reaction?
View Answer Report Error Discuss
Which of the follow is the last element in Newlands Law of Octaves classification?
By which of the following processes are metals of high reactivity extracted from purified molten ore?
How many atoms are present in a (NH4)2SO4 molecule?
In Mendeleev's periodic table, the properties of the elements are considered a periodic function of their:
Which gas is released when water is added to bleaching powder?
Atoms of same element having different mass numbers are called__________
Decane has how many hydrogen atoms?
Aptitude and Reasoning
General Knowledge
Puzzles
Interviews
Technical
Certifications
Exams
Job
Roles
True or False
Exams