The number of elements in Nature - 92, The number of elements on the Periodic Table. - 118, The number of Rows on the Periodic Table. - 7, The number of elements in the 2nd Row - 8, Fluorine's Atomic Number - 9,

6th Video B

Papan Peringkat

Gaya visual

Pilihan

Berganti templat

Pulihkan simpan otomatis: ?