17 нояб. 2023 г. · The last element in period 4 of the periodic table is krypton (Kr). Period 4 contains 18 elements ranging from potassium (K) to krypton (Kr).

The last element of period 4 is Krypton Kr has an atomic number is 36. The fourth row of the periodic table is period 4. Krypton comes in the category of ...

5 сент. 2020 г. · Answer. The fourth period contains 18 elements beginning with potassium and ending with krypton – one element for each of the eighteen groups.

A period 4 element is an element in the fourth period (row) of the periodic table. It begins at potassium and ends at krypton. Period 4 has 18 elements.

At the last of this period there is a noble called krypton. Thus krypton is the last element of the ${4^{th}}$ period. The atomic number of krypton is $36 ...