2006-09-27 20:05:38 · 5 answers · asked by chellbell 1 in Science & Mathematics ➔ Chemistry
The atomic number of Francium is Z = 87. To find the atomic number of the next - undiscovered - alkali metal you have to add:
2 (groups of the s sector of the P.T.) + 10 (groups of the d sector) + 14 (groups of the f sector) + 6 (groups of the p sector) = 32 total.
So the atomic number of the unknown element is:
87 + 32 = 119
2006-09-27 21:19:36 · answer #1 · answered by Dimos F 4 · 0⤊ 1⤋
Fr On Periodic Table
2016-12-28 04:26:49 · answer #2 · answered by ? 3 · 0⤊ 0⤋
The latest element is Roentgenium with atomic No. 111 has discovered in 1994. my guess about the atomic nomber of undiscovered element directly below francium is 119.
2006-09-27 20:32:49 · answer #3 · answered by aahs137 3 · 0⤊ 1⤋
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2016-12-15 15:57:43 · answer #4 · answered by lotta 4 · 0⤊ 0⤋
if everything goes as planned 119
2006-09-28 02:07:14 · answer #5 · answered by The Cheminator 5 · 0⤊ 1⤋
104?
2006-09-27 20:16:43 · answer #6 · answered by Timmo 1 · 0⤊ 2⤋