lowing number

$($b$)9\mathrm{.}50001$

nt $0\mathrm{.}00000062$

$($b$)6\mathrm{.}0{10}^{-7}$

ollowing pairs

I$)S$&$Cd$

$($b$)$ II and IV

e addition of

$($b$)18\mathrm{.}8$

wing pairs of

$($b$)$ Se & As

$1$: Winter $2024$