Question

arrange the following atoms, top to bottom, in the correct order of increasing ionization energy starting with the lowest. cs li na k rb question 5 of 15

Explanation:

Step1: Recall ionization - energy trend

Ionization energy decreases down a group in the periodic table. These elements (Cs, Li, Na, K, Rb) are all in Group 1 (alkali - metals).

Step2: Arrange elements

As we move down Group 1 from top to bottom, the order of increasing atomic number and decreasing ionization energy is Cs, Rb, K, Na, Li. So, the order of increasing ionization energy is Cs, Rb, K, Na, Li.

Answer:

Cs, Rb, K, Na, Li