Data for four gaseous diatomics: P ($1.10\mathrm{D}$, $128\mathrm{pm}$), Q ($0.80\mathrm{D}$, $141\mathrm{pm}$), R ($9.2\mathrm{D}$, $235\mathrm{pm}$), S ($3.5\mathrm{D}$, $170\mathrm{pm}$) as (${\mu }_{obs}$, $d$). Use percent ionic character $=100{\mu }_{obs}/(ed)$ with $e=1.6\times 10^{-19}\mathrm{C}$ and $1\mathrm{D}=3.336\times 10^{-30}\mathrm{C}\mathrm{m}$. Which statements are correct?

1. AP has a percent ionic character between $17\%$ and $19\%$
2. BR is more than $4$ times as ionic as P
3. CQ is the least ionic of the four
4. DS is more than $50\%$ ionic