Question
Among B 2 H 6 ,   B 3 N 3 H 6 ,   N 2 O ,   N 2 O 4 ,   H 2 S 2 O 3 and H 2 S 2 O 8 , the number of molecules containing covalent bond between two atoms of the same kind is __________
Among B 2 H 6 ,   B 3 N 3 H 6 ,   N 2 O ,   N 2 O 4 ,   H 2 S 2 O 3 and H 2 S 2 O 8 , the number of molecules containing covalent bond between two atoms of the same kind is __________
A. A
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Related: Chemistry — Chemical Bonding and Molecular Structure · All PYQ Banks