化学例

$F r$

ステップ 1

$F r$ is insoluble because Fluorides are frequently insoluble. Examples: $B a F_{2}$ , $M g F_{2}$ , and $P b F_{2}$ .

$F r$ は不溶性です

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$

化学 例