March 2019 1 79 Report
Sebanyak 10,4 gram logam L bervalensi tiga direaksikan dengan larutan asam klorida menghasilkan 6,72 liter gas hidrogen pada keadaan STP. jika unsur logam tersebut mempunyai 28 neutron, tentukan letak unsur tersebut dalam sistem periodik unsur !
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