15KiB, 234x236, Screenshot 2021-02-05 131557.png View SameGoogleiqdbSauceNAO Anonymous Fri 05 Feb 21:17:23 2021 No.12671488 ViewReplyOriginalReport Quoted By: >>12671502 >>12673197 My teacher says that there are 5 valence electrons in arsenic but i only see 4, help