Alia needs to order the following isotopes by atomic number. Use what you know about atomic number and isotopes to drag and drop the tiles in order of increasing atomic number from lowest to highest.

Silver-109
Cadmium-106
Rhodium-122
Indium-110
Palladium-109

Rhodium-122 < Palladium-109 < Silver-109  <  Cadmium-106 < Indium-110

Explanation:

Atomic number - Number of protons.

The number displayed at the end of the element in this question represents the mass number (Number of protons + Number of neutrons).

The atomic number of the isotopes are given below;

Silver-109  --> 47

Cadmium-106  --> 48

Rhodium-122   --> 45

Indium-110   --> 49

Palladium-109  --> 46

Arranging in order of increasing atomic number from lowest to highest;

Rhodium-122 < Palladium-109 < Silver-109  <  Cadmium-106 < Indium-110

indium, and thallium have three electrons i think

the answer would be b i believe