Eight.
Sodium, Magnesium, Aluminium, Silicon, Phosphorous, Sulfur, Chlorine, Argon
There are eight third period transition elements on the periodic table.
Period 1: 2 elements Period 2: 8 elements Period 3: 8 elements Period 4: 18 elements Period 5: 18 elements Period 6: 32 elements Period 7: 25 elements
NA and MG are bridge elements because some of the second period elements show a diagonal relationship with the third period elements. Other examples would be LI and MG.
103
A period is a horizontal row on the periodic table of the elements. There are seven periods on the periodic table. Each period corresponds to the highest energy level that contains electrons. For example, the elements in the first period have electrons in the first energy level, which is the only energy level available; the elements in the second period have their highest energy electrons in the second energy level; the elements in the third period have their highest energy electrons in the third energy level, and so on.
8 elements
There are 8 elements in the third period of periodic table. The elements belong to group-1,2,13,14,15,16,17 and 18
There are eight third period transition elements on the periodic table.
There are 2 elements in the first period, 8, 8 elements in 2nd and 3rd periods respectively,
8 - Na, Mg, Al, Si, P, S, Cl, Ar
Period 1: 2 elements Period 2: 8 elements Period 3: 8 elements Period 4: 18 elements Period 5: 18 elements Period 6: 32 elements Period 7: 25 elements
NA and MG are bridge elements because some of the second period elements show a diagonal relationship with the third period elements. Other examples would be LI and MG.
103
There are 18 elements in period 4.
there are 32 elements in period 6.
18
There are 32 elements in the 6th period of the periodic table.