Which of the following has larger bond angle in each pair?
(i) ${{CO}{2}}$,
${ BF }{ 3 }$
(ii) ${N H }{ 3 }$,
${C H }{ 4 }$
(iii) $H { 2 }O$,
$H { 2 }S$
(iv) ${ SiF }{ 4 }$,
$C{2}H_{2}$
(i) ${ Co }{ 2 }$
(ii)${ CH }{ 4 }$
(iii) $H { 2 }O$
(iv)$C{2}H_{2}$