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The number of unpaired electrons in carbon atom in excited state is:
(1) One
(2) Two
(3) Three
(4) Four
Ans: Four
Borosilicate glass: in this boric anhydride is used in place of lime. This glass generally contains 75-81% silica, 10-13.5% B 2 O 3 , 4.5-6% Na 2 O and 2-5% Al 2 O 3 . Sometimes Z
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what are similarities and differences among the Arrhenius, Bronsted-Lowry, and Lewis acid-base theories?
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