demical notation of
[tex]2.31 \times {10}^{ - 7} [/tex]
[tex]323.24 \times {10}^{ - 2} [/tex]
[tex]12.32 \times {10}^{2} [/tex]
[tex]1.9 \times {10}^{ - 11} [/tex]
[tex]8.305 \times {10}^{12} [/tex]
​