How many of the following is correct regarding bond angle ?
i) ${\mathrm{NH}}_3<{\mathrm{H}}_3{\mathrm{O}}^{+}$      ii) ${\mathrm{F}}_2\mathrm{O}<{\mathrm{H}}_2\mathrm{O}$      iii) ${\mathrm{SCl}}_2<{\mathrm{OCl}}_2$     iv) ${\mathrm{H}}_2\mathrm{S}<{\mathrm{H}}_2\mathrm{O}\text{ (v) }{\mathrm{NO}}_2<{\mathrm{N}}_2\mathrm{O}$ 

vi) ${{\mathrm{CH}}^{-}}_3<{{\mathrm{CH}}^{+}}_3$   vii) ${\mathrm{NH}}_3<{\mathrm{CH}}_4$    viii) ${{\mathrm{BF}}^{-}}_4<{\mathrm{BF}}_3$    ix) ${\mathrm{SnCl}}_2<{\mathrm{HgCl}}_2$

107 degree and 113 degree

103 degree and 104 degree

103 degree and 111 degree

92 degree and 104 degree

115 degree and 180 degree

107 degree and 120 degree

107 degree and 109 degree

109 degree and 120 degree

95 degree and 180 degree respectively