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 total number of molecules containing a covalent bond between two atoms of the same kind is

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Q. Fill in the blanks in the following sentences:
(i) Two atoms of the same element combine to form a molecule. The bond between them is known as ................ bond.
(ii) Two chlorine atoms combine to form a molecule. The bond between them is known as ..........
(iii) In forming oxygen molecule, .............. electrons are shared by each atom of oxygen.
(iv) In forming N₂ molecule, .............. electrons are shared by each atom of nitrogen.
(v) The number of single covalent bonds in C₂H₂ molecule are ...........
(vi) Melting points and boiling points of ionic compounds are generally ............ than those of covalent compounds.

Fill in the blanks in the following sentences:
(i) Two atoms of the same element combine to form a molecule. The bond between them is known as .. bond.
(ii) Two chlorine atoms combine to form a molecule. The bond between them is known as....
(iii) In the formation of an oxygen molecule, ... electrons are shared by each atom of oxygen.
(iv) In the formation of a $N_{2}$ molecule, ... electrons are shared by each atom on nitrogen.
(v) The number of single covalent bonds in $C_{2} H_{2}$ molecule are....
(vi) Melting points and boiling points of ionic compounds are generally ... Than those of covalent compounds.

Q. 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 total number of molecules containing a covalent bond between two atoms of the same kind is

Q. How many of the following compounds has XX bonds i.e. single covalent bond between two same elements in their molecules :

H_{2} S_{2} O_{4}, H_{2} S_{2} O_{7}, H_{2} S_{2} O_{8}, N_{2} O, N_{2} O_{3}, N_{2} O_{4}, N_{2} O_{5}, {(H P O_{3})}_{3}

Q. Which among the following contains same number of molecules as in

22 g r a m s

N_{2} O

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Among B2H6, B3N3H6, N2O, N2O4, H2S2O3 and H2S2O8, the total number of molecules containing a 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 total number of molecules containing a covalent bond between two atoms of the same kind is