chlorine (Cl)
Sodium (Na), element number 11.
Sodium has the largest atomic size in the third period.
Third period has 8 elements. They have 3 electron shells.
Iodine is itself an element. It is in group 7a. A compound that it is in for instance is potassium iodide
The element with the atomic number 53 is Iodine (I). Iodine is a Group 17(7) Halogen in Period 5 of the Periodic Table. It has 53 electrons in 5 shells with 7 electrons in the outer shell.
Nitrogen is period 2, group 15. sodium is period 3 group 1, iodine is period5 group 17. mercury is period 6 group 12.
Group 7 Period 5
nitrogen- group 15; period 2 sodium- group 1; period 3 iodine- group 17; period 5 mercury- group 12; period 6
Sodium (Na), element number 11.
Iodine, element number 53 is the halogen (Group 17) element in period 5.
Sodium has the largest atomic size in the third period.
Third period has 8 elements. They have 3 electron shells.
Iodine is itself an element. It is in group 7a. A compound that it is in for instance is potassium iodide
sodium and lithium are both group 1 elements (like potassium)
In the older versions of the periodic table, group VIIA corresponds to the current group 17, the halogens.
The element with the atomic number 53 is Iodine (I). Iodine is a Group 17(7) Halogen in Period 5 of the Periodic Table. It has 53 electrons in 5 shells with 7 electrons in the outer shell.
Group 17, the halogens.