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Element Atomic No Mass No Proton NeutronCl 17 - - 18Si - 28 - -F - - 9 10
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Cl 17 - - 18Si - 28 - -F - - 9 10
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cbsejagranjosh.com
![1110901 - 01 -12 CLASS X -AG-3[CBSE]](https://cdn.vdocuments.pub/doc/165x107/577d22c11a28ab4e1e982883/1110901-01-12-class-x-ag-3cbse.jpg)
