October 2018 1 120 Report
Tanpa melihat tabel periodik, ramalkan posisi unsur-unsur dengan nomor atom berikut pada tabel periodik!
a. 23.
b. 30.
c. 34.
d. 46.
e. 56.
f. 58.
g. 47.
h. 42.

Terima kasih sebelumnya :-)
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