lanthanium
the answer is THALLIUM
It is a lanthanide in period 6.
Lead belongs to group-14. Its period number is 6.
It is barium.
Group 3A is an old numbering system of the groups of the periodic table. Using the modern numbering system of the groups, you are referring to group 13. The element in group 13, period 6 is thallium (Tl).
there is no element found in such a place because that spot doesn't exist. there is a period 4-7 but not 1-3 for group 6. that particular spot is open and doesn't include any elements
Barium (Ba) Barium (Ba) : is in period 6 group 2. Same group where Magnesium (Mg) is found.
Hafnium is currently found in Group IV B and Period 6.
lanthanium
the answer is THALLIUM
Nitrogen is period 2, group 15. sodium is period 3 group 1, iodine is period5 group 17. mercury is period 6 group 12.
Thallium(Tl)
nitrogen- group 15; period 2 sodium- group 1; period 3 iodine- group 17; period 5 mercury- group 12; period 6
Gold, Au, is found in the Transition Metals in group 12, period 6.
(3 x 3) - 6 = 3 3a-6=3 3a=3+6 3a=9 a=9/3 a=3
0.5