There is no such element.
Bromine
There is no such element on the Periodic Table
Gallium
Aluminum has its electrons in three different energy levels. Therefore it is in third period. As it has three valence electrons, it is located in group 3.Aluminium is found in group-13. Its period umber is 3. Its atomic number is 13.Aluminium is a metal element. It is in the 13th group of the periodic table. And it belongs to the 3rd period.
Third period has 8 elements. They have 3 electron shells.
Bromine
There is no such element on the Periodic Table
Chlorine.
The compound in group 7A and third period is Bromine or Br. The dot of this would be . . :Br. . . The compound in group 7A and third period is Bromine or Br. The dot of this would be . . :Br. . .
Silicon is p-block element. It has 4 valence electrons. It is present in group-14.Titanium has 4 valence electrons. It is in the third period. Titanium is a metal element.
Gallium
In the third period.
Aluminum has its electrons in three different energy levels. Therefore it is in third period. As it has three valence electrons, it is located in group 3.Aluminium is found in group-13. Its period umber is 3. Its atomic number is 13.Aluminium is a metal element. It is in the 13th group of the periodic table. And it belongs to the 3rd period.
Third period has 8 elements. They have 3 electron shells.
Sodium has the largest atomic size in the third period.
Argon (Ar, element number 18) is the last element in the third period of the periodic table.
The atom of an element in the third period of the Periodic Table has 3 energy levels and so on. Also, atoms of elements in the same group have the same no. of valence electrons.